TY  - JOUR
AU  - Bickmore, Timothy W
AU  - Utami, Dina
AU  - Matsuyama, Robin
AU  - Paasche-Orlow, Michael K
PY  - 2016
DA  - 2016/01/04
TI  - Improving Access to Online Health Information With Conversational Agents: A Randomized Controlled Experiment
JO  - J Med Internet Res
SP  - e1
VL  - 18
IS  - 1
KW  - embodied conversational agent
KW  - search user interface
KW  - information retrieval user interface
KW  - Web search
KW  - health literacy
KW  - relational agent
KW  - computer literacy
KW  - search engine
KW  - Internet
AB  - Background: Conventional Web-based search engines may be unusable by individuals with low health literacy for finding health-related information, thus precluding their use by this population. Objective: We describe a conversational search engine interface designed to allow individuals with low health and computer literacy identify and learn about clinical trials on the Internet. Methods: A randomized trial involving 89 participants compared the conversational search engine interface (n=43) to the existing conventional keyword- and facet-based search engine interface (n=46) for the National Cancer Institute Clinical Trials database. Each participant performed 2 tasks: finding a clinical trial for themselves and finding a trial that met prespecified criteria. Results: Results indicated that all participants were more satisfied with the conversational interface based on 7-point self-reported satisfaction ratings (task 1: mean 4.9, SD 1.8 vs mean 3.2, SD 1.8, P<.001; task 2: mean 4.8, SD 1.9 vs mean 3.2, SD 1.7, P<.001) compared to the conventional Web form-based interface. All participants also rated the trials they found as better meeting their search criteria, based on 7-point self-reported scales (task 1: mean 3.7, SD 1.6 vs mean 2.7, SD 1.8, P=.01; task 2: mean 4.8, SD 1.7 vs mean 3.4, SD 1.9, P<.01). Participants with low health literacy failed to find any trials that satisfied the prespecified criteria for task 2 using the conventional search engine interface, whereas 36% (5/14) were successful at this task using the conversational interface (P=.05). Conclusions: Conversational agents can be used to improve accessibility to Web-based searches in general and clinical trials in particular, and can help decrease recruitment bias against disadvantaged populations. 
SN  - 1438-8871
UR  - http://www.jmir.org/2016/1/e1/
UR  - https://doi.org/10.2196/jmir.5239
UR  - http://www.ncbi.nlm.nih.gov/pubmed/26728964
DO  - 10.2196/jmir.5239
ID  - info:doi/10.2196/jmir.5239
ER  -