Validation of the eHealth Literacy Scale Instrument in a Restless Legs Syndrome Population: Classical Test Theory and Rasch Analysis Study

Mattias Georgsson   ¹ , PhD ;   Elzana Odzakovic   ¹ , PhD ;   Maria Björk   ¹ , PhD ;   Viktor Kaldo   ^{2, 3} , PhD ;   Susanna Jernelöv   ^{3, 4} , PhD ;   Kerstin Blom   ³ , PhD ;   Martin Ulander   ^{5, 6} , PhD ;   Bengt Fridlund   ⁷ , PhD ;   Susanne Knutsson   ^{7, 8} , PhD ;   Christina Sandlund   ^{9, 10} , PhD ;   Amir Pakpour   ¹ , PhD ;   Anders Broström   ^{1, 6, 11} , PhD

¹ Department of Nursing, School of Health and Welfare, Jönköping University, Jönköping, Sweden

² Department of Psychology, Faculty of Health and Life Sciences, Linnaeus University, Växjö, Sweden

³ Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet, & Stockholm Health Care Services, Region Stockholm, Stockholm, Sweden

⁴ Division of Psychology, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden

⁵ Division of Neurobiology, Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden

⁶ Department of Clinical Neurophysiology, Linköping University Hospital, Linköping, Sweden

⁷ Centre of Interprofessional Collaboration within Emergency Care (CICE), Linnaeus University, Växjö, Sweden

⁸ Department of Health and Caring Sciences, Faculty of Health and Life Sciences, Linnaeus University, Växjö, Sweden

⁹ Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden

¹⁰ Academic Primary Health Care Centre, Region Stockholm, Stockholm, Sweden

¹¹ Department of Health and Caring Sciences, Western Norway University of Applied Sciences, Bergen, Norway