End Users’ and Other Stakeholders’ Needs and Requirements in the Development of a Personalized Integrated Care Platform (PROCare4Life) for Older People With Dementia or Parkinson Disease: Mixed Methods Study

Background With what has been known as the “triple-win effect”, introducing information and communication technologies (ICTs) in the health care of neurodegenerative diseases is beneficial in delaying the need for institutional care, reducing the associated health care costs, reducing the caregiving burden, and improving individuals’ quality of life. Nevertheless, the mismatch between the users’ expectations and their actual needs remains one of the main challenges that can reduce the usability of technology solutions. Therefore, the European project Personalized Integrated Care Promoting Quality of Life for Older People (PROCare4Life), which aimed to develop an ICT-based platform for all parties involved in the health care of neurodegenerative diseases, adopted a user-centered design approach, where all users are involved from the inception and throughout the platform development and implementation to integrate their needs and requirements in the proposed platform. Objective This paper presents the results of a study on the needs and requirements of the potential end users (older people with neurodegenerative diseases, caregivers, and health care professionals) and other key stakeholders in the development of the PROCare4Life platform. Methods A mixed qualitative and quantitative study design was used, including 2 web-based surveys, 40 interviews, and 4 workshops. The study was conducted between April and September 2020 in 5 European countries: Germany, Italy, Portugal, Romania, and Spain. Both data types were analyzed separately and then merged and interpreted, with greater priority placed on qualitative research. Results A total of 217 participants were recruited; 157 (72.4%) of them completed the web-based surveys (n=85, 54.1% patients and n=72, 45.9% caregivers), and 60 (27.6%) individuals participated in the qualitative research (20/60, 33% health care professionals; 5/60, 8% patients; 5/60, 8% caregivers; and 30/60, 50% key stakeholders). We identified 3 main themes (T): (T1) experiences associated with illness, (T2) thoughts about the platform technology, and (T3) desired properties. Alerts for adverse events, communication tools, reminders, and monitoring are constantly needed functionalities, whereas ease of use, personalization, and user-friendliness are foreseen as necessary features. Conclusions This paper identified the key personal, social, and health factors that influence the daily lives of the potential end users and reflected on their needs and expectations regarding the design of the proposed PROCare4Life platform. The collected data were useful for the development of the PROCare4Life platform. Although the combination and collection of features for diverse user groups are typical for integrated care platforms, it results in exponential complexity for designers, developers, and users. Contradicting opinions and several concerns in this study demonstrate that an ICT-integrated care platform should not promise too much for too many. Instead, selection, focus, and, sometimes, restriction to essentials are necessary. Users and other stakeholders should be involved in these decisions. International Registered Report Identifier (IRRID) RR2-10.2196/22463


Introduction
Background Neurodegenerative diseases (NDDs), including dementia and Parkinson disease (PD), are among the most common chronic diseases associated with aging [1]. Characterized by a continuous decline in motor and cognitive abilities [2], difficulties in performing daily activities, and altered behavior [3], NDDs are mostly disabling diseases that negatively impact the quality of life of older populations and their families [1,4]. With the increased prevalence of NDDs, an enormous burden is placed on health care systems in terms of both resources and costs [2,[5][6][7][8][9]. Therefore, implementing alternative health care solutions is needed [10].
Integrated care, which coordinates and brings together different health services, has the advantages of optimizing health care resources and being able to respond to the needs of older populations with chronic diseases [11,12]. In Europe, as a part of the eHealth action plan in supporting active aging, the introduction of the integrated care jointly with information and communication technology (ICT) supportive tools has contributed to improving patient experience and providing more efficient health care services at lower costs [13,14]. Divided into wearable, nonwearable, and hybrid-based categories, ICTs offer a wide variety of technological solutions with the purpose of either monitoring or managing the users' health [15].
In the care of NDDs, with what has been known as the "triple-win effect," ICTs are beneficial in "(1) delaying the need for institutional care, and reduction of the associated health care costs, (2) reducing the caregiving burden and (3) improving individuals' QoL by helping to keep an independent lifestyle, autonomy and social interaction" [16]. In addition, the integration of health-related data of patients in an interactive web interface enables health care professionals (HCPs) to better monitor and support their patients [17,18].
Although older people, their families, and HCPs are positive about using ICTs [19], the mismatch between the users' expectations and their actual needs remains one of the main challenges that can reduce the usability of technology solutions targeting older people with mild cognitive decline [20]. In fact, developing an ill-fitting ICT for this target group can be a burden instead of being a supportive tool [21,22]. Therefore, it is crucial to first identify the needs of the users when implementing ICTs in health care to better develop a suitable solution [23].
In this paper, we present the results of a study on the needs and requirements of older people with NDDs, their caregivers, HCPs, and other key stakeholders in the development of a personalized integrated ICT-based, Personalized Integrated Care Promoting Quality of Life for Older People Platform (PROCare4Life). These results ought to drive implications on the design and the properties of the platform.

PROCare4Life
PROCare4Life is an ICT-based, integrated, scalable, and interactive health care platform. The intended end users include older people with NDDs, caregivers, and HCPs involved in the care process. The PROCare4Life platform plans to collect disease, cognitive, and behavior related data about the patients via wearables, stationary devices, medical records, and other sensors. In a highly secured and protected cloud environment, algorithms analyze and process these data to create a profile for each patient. On the basis of this profile, personalized information and recommendations are provided to those involved in the care plan. The end users will be able to interact with a wide range of services via various digital devices such as smartphone, tablet, or smart television. More details about the aims and the technology of PROCare4Life are reported elsewhere [24].
Throughout the entire development process of the PROCare4Life platform, the project adopted a user-centered design (UCD) approach [25]. This has been recommended for decision makers and leaders in the process of developing ICT in integrated care [26] to ensure active engagement and incorporation of the intended users' feedback. In line with this approach, the following steps were incorporated: (1) study of the user needs and requirements; (2) iterative design throughout the pilot phases; (3) iterative user evaluation, refining the design throughout the pilots; and (4) a final product that is developed based on the iterative cycles and evaluation or a developed final product based on the iterative cycles and evaluation. This study focused on the first step, understanding the users' needs and requirements.

Research on Users' Needs
In general, ICT solutions need to be easy to use, private, secure, and affordable in terms of costs [27]. However, older people tend to have heterogeneous needs [28], with possible conflicts among patients, caregivers, and HCPs [29]. In dementia, previous studies have summarized the main need areas as information, company, memory and daily activity support, and reduction of psychological stress [30,31]. A systematic review by Lauriks et al [32] that aimed to identify the unmet needs of patients and caregivers stated that ICTs need to be personalized according to the users' needs and abilities. Boman et al [33] studied the needs of people with cognitive impairment in the design of an ICT-based device. The study reported that the participants were positive about including calendars as memory support, whereas HCPs valued a feature that allows them to view the previous and current care plans. However, low participant numbers were reported as one of the study limitations. In PD, clinical symptoms have high daily fluctuations, meaning that nonmotor-and motor-related symptoms vary within and between days [34]. Therefore, the ICT solution needs to be able to monitor and identify all relevant changes and develop personalized strategies to counteract them [35]. In addition, social support positively affects the ability of patients with PD to cope with the difficulties in daily living and reduces the risk of developing nonmotor symptoms, such as depression [36].
The critique of previous research was that it did not consider the users in the early stages of development. Both patients and caregivers were included at later stages, which resulted in the lost value of their experiences [37].
Following the multidisciplinary principle of the UCD approach, in addition to the intended end users identified as patients, caregivers, and HCPs, the PROCare4Life study on users' needs includes other key stakeholders from different related health care disciplines. These stakeholders are academic researchers, decision makers, markets, and media actors. The overall objectives of this study were as follows: 1. Collecting detailed information on the opinions, thoughts, experiences, and feelings of the end users (patients, caregivers, and HCPs) and other key stakeholders regarding NDDs, health care processes, and digital health care solutions to identify those aspects where the PROCare4Life platform would best suit and support them.
2. Identifying the aspects that the PROCare4Life platform should consider to achieve success in its acceptance, development, and marketing (eg, strengths and weaknesses, factors that influence the digital health care market, and communication channels through which to adequately diffuse the product). This paper presents the results related to the first aim of the study on users' needs and requirements.

Study Design
In a mixed methods study design, we followed the formative and summative research methodologies to identify and analyze the end user needs (identified as patients, caregivers, and HCPs), key stakeholder perspectives (identified as academic researchers, media actors, policy makers, and market actors), and context. In the 2-step approach, we applied both qualitative and quantitative research methods. The quantitative data included 2 web-based surveys involving patients and caregivers. The qualitative data included semistructured interviews and workshops involving the end users and other key stakeholders. This study placed greater priority on qualitative research, with quantitative research playing a supportive role [38].

Study Procedure and Eligibility Criteria
This study was conducted between April and September 2020 in 5 European countries: Germany, Italy, Portugal, Romania, and Spain. The web-based surveys were launched first, followed by the semistructured interviews. Finally, 4 workshops that involved HCPs were conducted, in which the preliminary results from the surveys were presented and discussed.
In this study, patients were included if they were aged ≥65 years and diagnosed with PD or dementia, including Alzheimer disease and other dementias (OD). Patients with substantial cognitive impairment, intellectual disability, or other serious psychiatric conditions that affect their ability to use mobile phones or computers were excluded. Caregivers were referred to as those who care for patients diagnosed with PD or dementia as formal (ie, paid) or informal (ie, unpaid) caregivers. HCPs included those who worked in the medical or social care of patients diagnosed with PD or dementia (eg, physiotherapists, physicians, and occupational therapists). Further details regarding eligibility criteria and recruitment are reported in the study protocol [24].

Quantitative Data Collection and Analysis
In total, 2 anonymous web-based surveys were created in English through EUSurvey tool and were translated into the other 5 project languages (German, Italian, Portuguese, Romanian, and Spanish). Both surveys were available on the PROCare4Life official website [39], in the period between May 27, 2020, and July 31, 2020, along with a short explanation of the purpose of the surveys. In addition, the surveys were disseminated through consortium member databases, networks, and national patient associations. The questions were developed in collaboration with clinical partners and aimed to gather answers regarding the topics listed in Textbox 1.
A descriptive analysis of the quantitative data was applied, including descriptive statistics and frequencies. The 7-item abbreviated Zarit scale was analyzed using SPSS statistical software (version 27; IBM Corp). Textbox 1. Topics covered by the web-based surveys.
1. Demographic data 2. Disease-related symptoms, assessed through a list of formulated questions regularly used by one of the pilot centers in this study-Asociación Parkinson Madrid-in evaluating the disease symptoms and medication side effects. These questions were approved for their content by the Movement Disorders Study Group of the Spanish Society of Neurology [40] 3. Difficulties in activities of daily living, assessed through domains derived from the self-reported Barthel index [41], in addition to other domains related to difficulties moving around and accessing health care centers 4. Caregiver family burden, assessed through the 7-items abbreviated Zarit scale [42,43] 5. Assistive health technology experiences and acceptance, assessed through developed Likert-items questionnaires assessing the frequency of use and the importance of technology devices intended to be included in the PROCare4Life platform (eg, tablet or mobile app) 6. Expected benefits and desired features in the proposed PROCare4Life platform. On a Likert-items questionnaires, the key performance indicators to be achieved within the project (eg, feelings of safety, feelings of autonomy, perception of empowerment, improvement of social participation, mental condition, and physical condition) and the main functionalities to be included were assessed

Qualitative Data Collection and Analysis
Owing to the explorative nature of the study, individual interviews and workshops with open-ended questions were conducted in the period between June and July 2020. Each interview lasted between 30 and 60 minutes, and the following three types of interviews were conducted: 1. Interview for patients covering the same topics as in the quantitative study and allowing more exploratory answers through open-ended questions 2. Interview for caregivers covering their working experience, in addition to the topics mentioned in the web-based survey 3. Interview for key stakeholders covering their opinions, experiences, and ideas about using integrated digital health care platforms in the management of older people with NDDs, in addition to strengths, weaknesses, and the possible ways to promote the proposed PROCare4Life platform from their point of view Additionally, 4 workshops were conducted between July and August 2020, with a duration of approximately 2 hours each. They involved HCPs and covered topics related to their experiences with using integrated digital health care technologies in the care of people with NDDs, expected benefits, barriers, and their requirements regarding the properties of the proposed PROCare4Life platform. The workshops also included discussions about preliminary results from the web-based surveys, which allowed more interaction between the participants, aiming to enrich the data collected.
Owing to the pandemic situation in most of the European countries at the time of the study, this qualitative study was conducted on the web except for a few interviews, where participants requested a face-to-face interaction; in those cases, COVID-19 social distancing and safety measures were all considered.
Following a deductive-inductive approach, a framework containing the key topics covered in the quantitative study was developed. In total, 2 researchers worked independently and performed a first round of identifying the relevant text and coding (the four-eyes principle). The developed framework was applied to the entire data set but considering that the qualitative study included all the target groups, unlike the quantitative study, the researchers conducted a second round of open coding to identify additional topics and subtopics. The identified initial codes were discussed in a workshop involving the aforementioned researchers along with another researcher; significant data overarching the key topics were also discussed and validated in an iterative manner (discussion<->modification) to develop themes and subthemes (STs). The results and illustrative quotes were discussed with a researcher from Asociación Parkinson Madrid until a consensus was reached and themes were finalized.

Mixed Methods Analysis
Both data types were analyzed separately. The identified initial qualitative themes and the main quantitative results were merged, aiming to combine the results and present them as the final emerged themes and STs ( Figure 1). Although quantitative results provided numerical conclusions from our research and predicted outcomes about each theme, qualitative results allowed more comprehensive insights and in-depth knowledge from our participants about the same themes.
Because the topics in the surveys were also discussed during the interviews, the results were consistent, in particular those related to patients and caregivers. However, as the qualitative data were broader and involved all the participants, it included exclusive STs that had no corresponding supportive quantitative data. As these additional STs were considered important and provided a comprehensive reflection of the participants' point of view, we included them in the mixed methods analysis as well.
Finally, 3 main emerged themes along with several STs were identified, which are presented in the Results section.
According to Good Clinical Practice and International Conference on Harmonization standards, once the study was fully explained, a written or digital informed consent was obtained from each participant before any study-related procedures.
There were no direct physical risks to the participants. Participation was entirely voluntary, and the participants had the right to withdraw from the study at any time, without giving reasons or experiencing any disadvantage. In case of withdrawal, no replacement was considered.

Type of caregiver
Living with the person you care for

Overview
In this section, we present the 3 emerged themes developed based on merging and interpreting the qualitative and quantitative data, namely experiences associated with illness (theme 1), thoughts about the platform technology (theme 2), and desired properties (theme 3). For every emerged theme, different STs were identified ( Figure 2). We first present the detailed qualitative findings for each ST, followed by the relevant supportive quantitative findings. In addition, Table 3 illustrates a summary of the mixed methods analysis for all 3 themes and STs.

Theme 1: Experiences Associated With Illness
In this theme, we present what the participants expressed regarding the NDD symptoms, how the illness affected their everyday lives, and the difficulties encountered within the health care services.

ST1.1: Motor Symptoms
Among the different motor symptoms associated with NDDs, stiffness and loss of balance were frequently mentioned. Most patients and caregivers expressed their concerns regarding the consequences of motor symptoms, such as frequent falls and injuries: All the detailed results from the surveys regarding this theme are provided in the Multimedia Appendix 1.

Theme 2: Thoughts About the Platform Technology
In this theme, the opinions of the participants regarding the proposed platform technology were gathered, including their attitudes toward different aspects of the platform technology, device preferences, their expected benefits and main concerns, and their willingness to use it and pay for it.

ST2.1: Attitude
On being introduced to the concept of the PROCare4Life platform and its main objectives, the participants showed varied attitudes. Some were positive about the initial platform design; in fact, several patients and caregivers said they personally loved it. HCPs and key stakeholders found it to be helpful, interesting, and required in the health care process: Not only interesting but also very much needed. [

ST2.2: Device Acceptance
The initial design of the platform and different devices to be integrated were explained. Most patients and caregivers preferred using wearables and smartphones: With an explanation and knowing the objective. Yes, she loves wearing devices and wanted an Android smartphone, she wears tele-assistance and likes it.
[Caregiver, Spain] However, during the workshop in Germany, some HCPs preferred tablets over smartphones, referring to the negative experience they had regarding the smartphones' usability: With smartphones it was certainly the case-so the feedback that it was difficult to use because people didn't understand it well and the volume was so low.
[HCP, Germany] In addition, including stationary devices was seen as helpful, as it can ensure continuous monitoring of the patients in case they forgot to wear their wearables:

The strength of having sensors at home is that if they have a wearable system, people might forget to put it on. Fixed sensors will be better, because they will always be present. [Media actor, Portugal]
Conversely, some devices were less accepted, such as a smart television, which was thought to be difficult for patients with dementia, and cameras, owing to data protection and privacy intrusion worries:

ST2.3: Expected Benefits
The participants expected several benefits when using the platform. Improvements in communication among patients, caregivers, and HCPs, as well as among HCPs, was frequently mentioned:

Communication between specialists could probably be better, and between the specialists and the patients also. [Caregiver, Spain]
This, in turn, enables information sharing among all the stakeholders involved in the health care process and supports the multidisciplinary approach for patients:

ST2.4: Concerns
Most of the concerns expressed by the participants regarding the proposed platform were related to privacy and data protection. Owing to the nature of such platforms that require sharing personal data, explaining everything to the user and obtaining their consent were considered a must. Meanwhile, concerns related to the security of the platform and the protection measures followed to secure the data were mentioned: Regarding the time and effort to learn, the end users were more willing to invest in the proposed platform, stating that it pays off eventually:

Supportive Quantitative Results for Theme 2
Questions related to device acceptance, expected benefits, and willingness to pay for the proposed platform were asked in the web-based surveys.
Patients and caregivers were asked about their acceptance for several technological devices that are thought to be included in the platform. On a Likert item questionnaire, wearable devices were highly accepted among patients; in fact, 57% (

Theme 3: Desired Platform Properties and Supportive Measures
This theme reports about participants' answers regarding the needed features and supportive functionalities to be included in PROCare4Life.

ST3.1: Alerts for Adverse Events
Some symptoms related to NDDs can appear suddenly. Including a function that detects adverse events and informs a responsible party about them was thought to be useful and a relief for patients and caregivers:

ST3.2: Monitoring
Having a tool that monitors the patients' health status was seen as very useful by most of the participants, as it provides continuous and objective information about the patients. It can be used to monitor the patient's vital signs and other health-related measures: So these systems could be used for monitoring pulse and sugar status and vitamin status and nutritional status and exercise status. [Market actor 2, Germany] HCPs were interested in monitoring the symptom evolution and the side effects of certain medications. Furthermore, monitoring the movement and gait patterns to detect any changes (ie, fall detection), particularly in patients with PD, was thought to be important: One could also install sensors in the room and measure the movement patterns of the residents with Parkinson's disease. This would also make it possible to recognize early on, for example, if the person has a certain movement pattern that he or she will soon fall. And warning signals can also be sent accordingly. [HCP, Germany] In addition, monitoring patients in real time was thought to be important: This could mean that monitoring needs to be controlled or adapted to the users.

ST3.3: Communication Tools
Inclusion of communication tools that could work in different ways was frequently reported. First, the participants thought that a tool for communication that enables patients and caregivers to ask questions regarding their medications or issuing health reports and sick leave without in-person appointments with HCPs would be useful: For example, information about drugs contraindicated in the disease or on aspects such as a sick leave, some simple information that would avoid me having to go to my health center. [Patient 1 with PD, Spain] In addition, HCPs can launch digital interviews and interventions, for instance, physiotherapy sessions that could be held on the web when the patients are not able to personally visit the health care institutions:

A tool that would allow video calls: Digital interviews, interventions. [HCP, Spain]
Follow-up sessions could also be held through such tools: For some phases video calls can be useful, I don't know about therapy but I can imagine that you can have it where you meet physically but also have check-up during the week over a video call.
[Academia 1, Germany] Second, one of the HCPs thought that a communication tool that facilitates interaction among HCPs from different specialties regarding their patients' health conditions and treatments would be useful:

It would be great to have a two-way access and communication service with other professionals. [HCP, Spain]
Another way for communication was suggested by one of the caregivers, which is implementing a chat tool or system where different caregivers and involved persons could share knowledge and interact: A chat system! So that either a caregiver or qualified staff could answer questions, I mean, it should somehow serve as an interactive chat among all users, or a solution should be sought somehow; I mean, if I need to pose a question, it should pop up, as it would with a forum, and anyone should be able to answer that question, that is, if the site developer is not available right there and then, if someone else is nevertheless available to talk to me and share their opinion, then from the opinions of two or three participants I might extract a conclusion guiding me this or that way. [Caregiver, Romania] However, some of the local organizations participating in this project already have their own internal communication channels using WhatsApp or Facebook, through which they can interact with workers in their organization or organize some social events with their peers:

ST3.4: Reminders
With the memory problems associated with NDDs, integrating reminders that inform the patients of what they have done or suggest what they should do was frequently reported in the interviews for providing support to the caregivers and patients' families: The relatives are also relieved by this. Because they also think a lot for the patients. And when they no longer have to take over this reminder function, they are also relieved. [

ST3.5: Lifestyle Content
Inclusion of some support related to the lifestyle activities of both patients and caregivers was mentioned by the participants of this study. The areas of support reported were nutrition and physical activity: Better implement an online nutrition program. I would always try to add sports and movement offers. Just as well as cultural aspects. [Academia 2, Germany] Sociocultural events and cognitive games were also preferred: Yes, I would love to use it [games]. [Patient 1 with PD, Spain]

ST3.6: Ease of Use
The proposed platform needs to be simple and practical as stated by one of the patients with PD:

For me it is important that the system is practical and as simple as possible. [Patient 2 with PD, Spain]
In the workshops, one of the HCPs mentioned that it is even better if the platform is passive, considering the cognitive abilities of the patients with NDDs: In the case of people with cognitive impairment, it will also be important that the technology is not only easy but even passive. [HCP, Spain] Different criteria for ease of use were reported by all the participants, such as low interaction with the platform, easy navigation of the platform and retrieval of information, and fewer approvals and requests for setting up the platform.
One of the key stakeholders, who is also a clinical professional, stated that for clinical professionals, the easier the platform, the more it will be accepted and used: For us as clinical practitioners I think that must be a solution where we can easily access the information and the information must be as simple as we can get. So, I think we need to have something that we don't need to learn to use it, or at least if we have to, just learn a minimum of sets to use it because if it's complex system, I think we are going to let it go. The easier to use, the easier it will be. [Academia 4, Portugal]

ST3.7: Personalization
A relevant aspect of the platform is the ability to be customized to fit the users' needs and preferences, especially those needs related to the cognitive problems of the patients: Adapted to the needs of the person according to his/her cognitive state and preferences. [HCP, Spain] Personalization can be achieved by adapting the platform's tools according to the target group's needs. "Reminders" was highlighted as one of the desired tools. For example, a water intake reminder can be developed, which is important for older people with dementia who often forget to drink hydrating fluids: People with dementia often have the problem that they do not drink enough. And maybe you could install a water dispenser for them. [HCP, Germany] It is important that the platform considers the various needs among different end user groups and that it offers flexibility of its functions so that the end users can adjust it according to their interests and needs: For the HCPs, the user-friendly criteria were that the platform layout is predefined, has less text presentation, and focuses more on visualizing the information using symbols and graphs: No text. I think most people don't like to read text...I would like to see this in a traffic light system. So that the green area is everything ok, everything is good, with red something has to be done. [HCP, Germany]

ST3.9: Training
HCPs and other key stakeholders pointed out the need for the end users to be trained on how to use the platform. This includes educating them about the different devices and providing training sessions on their use. Furthermore, training should not only rely on manuals but also provide some interactive training sessions: I can learn it myself, but it is difficult for me to learn new programs by reading manual. As far as such new program I need someone who sits next to me and introduces me to the program. [Market actor 1, Germany]

ST3.10: Technical Support
With a digital platform, technical issues can always arise. Therefore, the presence of technical support was seen as a need by HCPs and other key stakeholders. This support can be in the form of automatic backups of the stored information or as supportive infrastructure and networking: If the system fails, having an automatic backup to prevent loss of information or any delays on the reports. [HCP, Portugal] In addition, a service hotline to report urgent technical issues is required: A service hotline would also make sense. If problems arise, it is important to reach someone. [HCP, Germany]

Supportive Quantitative Results for Theme 3
The web-based surveys included questions about several features and functionalities to be included in the platform. On a 3-point Likert-items questionnaire, a tool to monitor symptoms and activities was the highest-rated functionality, as 85% (72/85) of the patients found it very useful or useful. Most caregivers (65/72, 90%) found that a tool to detect adverse events, unusual activities, or movements was useful.
In addition, when asked about the importance of different features of the platform, 80% (68/85) of the patients reported the real-time information feature as very important, whereas approximately 89% (64/72) of the caregivers reported an easy-to-set-up platform as very important. Detailed results from the surveys regarding this theme are provided in the Multimedia Appendix 3.

Principal Findings
This study aimed to identify the needs and requirements for an ICT-based integrated care platform in supporting its potential end users and other stakeholders involved in the health care process of NDDs by exploring the participants' opinions regarding the health care process and digital health care solutions. Findings on experiences associated with NDD symptoms, the challenges faced by all the potential end users in health care services, and the inevitable changes to life and its context have been well documented [2,3]. This is perhaps why participants were so forthcoming with wanting to share their experience in the hope of a supportive technology solution.
Although both positive and negative attitudes of the participants toward PROCare4Life were explored, the participants expected several benefits when using the platform. These varied between supporting the patients' empowerment and independence, increasing caregivers' and HCPs' work efficiency, and ultimately improving health care services. Notably, influenced by the COVID-19 pandemic, most participants referred to the platform as a need, with most of them being willing to use it. This finding is of particular importance, as older people with chronic illnesses have been identified as a vulnerable group, who require special consideration for encouraging them to use ICT in health care during pandemic times [46].
Most of the desired functionalities reported here confirm findings from previous research, such as the need for medication intake reminders, monitoring, and communication tools [32,47]. We provide more insights into the specific needs related to these functionalities, such as the patients' constant need for meals, water intake, and appointment reminders. In addition, a monitoring functionality that provides objective data in real time for both caregivers and HCPs was reported, with emphasis on monitoring motor symptoms and gait patterns and installing a fall detection system. A communication tool was valued by all the potential end users, believing that it improves the relationship among patients, caregivers, and HCPs and facilitates the overall health care process. It is known that ICTs are useful in reducing social isolation and providing opportunities for older adults to keep in touch with the outside world [28,48,49]. Therefore, implementing a communication tool could alleviate the isolation and feeling of distress reported by the patients and caregivers in this study. Furthermore, as stated by one of the caregivers, a chat tool facilities interaction between peers and knowledge exchange among all the parties involved in the care process.
Another important finding was the need for personalization, which stems from the individuality of each user, including disease severity, experiences, and preferences. As the saying "One size does not fit all" goes, as this platform targets different end user groups, a flexible design should be considered. In addition, with the progressive nature of NDDs, there is a need to offer tailored functionalities that match the stage of the disease and patients' abilities. Having too many functionalities and options might cause confusion for the end users, particularly for patients and caregivers. Similar to what has been reported by Boman et al [33], some of our participants pointed out the need to provide >1 version or package of the platform to facilitate the customization of the product.
The diversity of needs, along with a few contradictions between the end user groups, was the main challenge in our work. Although patients and caregivers were concerned about using stationary devices and cameras, HCPs expressed that including these devices is important for ensuring the real-time monitoring functionality of the platform. In addition, the results show how end user groups tend to have different perspectives when identifying a specific property. For instance, although all the participants highlighted the need for the platform to be easy to use and user-friendly, both patients and caregivers viewed this as having familiar objects and comfortable wearables, whereas HCPs cared more for the visualization (ie, having a traffic color system) and the layout of the platform. Furthermore, HCPs emphasized that a platform that is easy to navigate through and retrieve information from is more likely to be used. It is known that simplicity, ease of use, and understandable features increase the possibility of older people with impaired cognitive abilities using digital devices independently and for a long term [29,33,[50][51][52][53][54].
The need for providing education about the platform and training on the devices to be used were stated by HCPs and other key stakeholders. Therefore, in addition to patients, offering training opportunities for HCPs and caregivers is of great importance. Staff who are familiar with the platform, have experience, and are interested in using it play an important role in encouraging their patients to use it [55,56].
It is also noteworthy that potential end users found it difficult to decide whether they would pay for the PROCare4Life platform and by how much. Although HCPs referred to this point as one of the typical barriers for ICT health care platforms, they were more willing to pay compared with patients and caregivers and believed that their institutions would be willing too. Identical to what was reported by Contreras-Somoza et al [48], who studied the acceptability of an ICT device for older adults with mild cognitive impairment, formal caregivers in this study expected PROCare4Life to be financed by the patients themselves, relatives, or health insurance companies. Furthermore, the patients in our study needed to grasp the benefits of the platform first before deciding on paying for it. HCPs suggested providing renting offers of the platform to ease the cost burden for those who would like to use it, in case no other financing possibility was available. Therefore, there is a need for providing a better investment in digital solutions that support healthy and independent aging, which relies on collaboration between the government, organizations, and the private health sector [48,57].
When developing an ICT platform that supports all the parties involved in the care process of older people with NDDs, identifying the users' needs, interests, and abilities is crucial [58], regardless of being challenged with the diversity of needs and different priorities of the participants in this study. Combining different views from different perspectives (eg, patients, caregivers, HCPs, and other stakeholders) is thought to prevent individual concerns such as privacy issues from becoming a barrier for using technology [59,60] and ultimately increase the acceptability of technology in health care [47].
In addition, our participants valued this study and appreciated the idea of trying to include them in the development process and understanding their needs: For this purpose, encapsulating a UCD approach in the development stages ensures addressing the real needs and avoiding poor final acceptance. Indeed, the rationale behind UCD is that the "purpose of any design is to serve the user, not to use a specific technology or to be an elegant piece" [61].

Implications on PROCare4Life
The data collected and knowledge gained from this study were transferred to the development and research team of PROCare4Life with the purpose of designing and redesigning the different services of the platform. What ultimately emerged from this initial phase of the project supported the efforts to raise awareness about the major areas of users' needs, where technological aspects of the platform could be more valuable. The identified "desired properties" represent the main core of the final platform solution based on a realistic idea of the problem and a better vision of what to prioritize for each of the properties, providing an insight into how the scheme of operation of the system was to be shaped. In addition, the work on specifying areas of technical interest to users is an ongoing process that shall continue throughout the project pilots as new needs emerge followed by further technical developments.
Furthermore, this study identified several prerequisites for the acceptance of this platform, for instance, training and technical support. Therefore, training manuals for users containing instructions for the implementation and use of the system have been produced and will be continuously adapted and improved until the end of the project for personalized configuration along with more training opportunities, such as interactive sessions and e-learning, which are currently being assessed in the framework of the pilots. In addition, each clinical site was assigned a technical partner for support and guidance in the event of any technical difficulty.
Regarding privacy and protection in the use of cameras, the technical team worked on a code with the depth camera and the real-time software to avoid the storage of any patient's images. In addition, a simplified illustrative video was distributed among the users, explaining how the images acquired by the camera are directly processed by a software that generates an output composed of an 18-point skeleton in combination with the depth information. Thus, no images are saved, avoiding privacy issues.

Strengths and Limitations
Developing a successful product means that the needs of the target groups are included [62]. This research was based on a large sample of participants, including different perspectives presented by patients, caregivers, HCPs, and other related key stakeholders. This ensured that all views on different needs and challenges are considered during the development and future pilot phases. The inclusion of patients with different NDDs (ie, dementia and PD) and the multisite (ie, 5 different European countries) approach allow the findings to be generalized so that the PROCare4Life platform solution can be applied to other chronic diseases and facilitates the exploitability of the achieved results in the long run. Furthermore, the mixed methodology study enriched the comprehensive data that reflected the diverse needs of the participants.
One of the main challenges this study faced was the COVID-19 pandemic, which directly impacted the dynamics and schedule of the PROCare4Life project in its first months of development. Confinement and social distancing measures implemented by all member states and local authorities in the different European countries required an adaptation in approaching and recruiting the participants involved in the study. Most data were collected remotely through phone or digital interviews and on the web; however, a few meetings were held face to face. This rearrangement required extra work for the researchers involved in this study, ensuring that the prevention and control measures to avoid infections were strictly applied. Surely, this situation created some challenges and limited in-person contact with the participants. Nevertheless, this study was able to approach the intended target groups and numbers. In addition, the PROCare4Life approach to the current pandemic situation was continuously documented in clinical partners' countries to ensure standardized preventive measures. This exchange led to the publication of a COVID-19 protocol that shares the instructions and suggestions of the respective national and local health authorities, which is available on the web [63]. In addition, the awareness of the pandemic seemed to open perspectives to the usefulness of the platform (eg, ST2.3).
By the time of the study, the design of the functionalities in the mock-ups were not developed yet. Although this was expected, considering the aim of the study and the early stage of the development process, some of the participants, in particular patients, were not able to imagine the design of the platform. It has been pointed out in the literature that patients with declined cognitive ability might have difficulty in imagining the things they cannot see or articulating their perceptions of the device intended to be used [33][34][35][36][37][38][39][40][41][42][43][44][45][46][47]. Considering this, HCPs and caregivers who were familiar with the patients were included. Furthermore, the early involvement of users in the process ensures the suitability of the product for its intended target group and purpose [64].
Another limitation is that this study prioritized qualitative data, which could mean losing some important quantitative results, in particular those related to patients and caregivers. However, the study design allowed the sharing of the same topics in both study methods. During the merging of the results, all the supportive quantitative data were considered. Finally, there was an overrepresentation of patients with PD in the study, which might have caused bias in the results toward motor symptoms as well as the inability of the study to draw conclusions on the specific needs of patients with other NDDs. The reason could be that patients with PD, especially in the early stages of the disease, are less likely to experience cognitive decline, and therefore, they are more easily engaged in this kind of study where they have to sustain attention and communicate their opinions clearly. In addition, in the countries involved in this study, associations of patients with PD are very active and eager to become involved. Nevertheless, samples were free from selection bias and were naturalistic under the overall umbrella of NDDs. For future studies, there might be a need for such kind of platforms to be designed for each neurodegenerative condition according to its own peculiarities.

Conclusions
In this study, the needs of all the parties involved in the health care process of NDDs regarding an ICT-based health care platform were explored. The pandemic situation highlighted opportunities for digitalization in health care. The mixed methods approach yielded mostly consistent results, which were in line with findings from the literature. The collected data were useful for the development of the PROCare4Life platform.
Although the combination and collection of features for diverse user groups are typical for integrated care platforms, this results in exponential complexity for designers, developers, and users. Contradicting opinions and several concerns in this study demonstrate that an integrated care platform should not promise too much for too many. Instead, selection, focus, and, sometimes, restriction to the essentials are necessary. Users and other stakeholders should be involved in these decisions.