Table 3. Barriers, facilitators, and study context of the reviewed articles.

Author, year	Health condition of interest	Study or instrument type	Barriers	Facilitators
Ancker, 2017 41	n/a	Cohort study	Low health and computer literacy	Needs for more information
Gordon, 2016 42	Chronic disease	Cohort study, survey	Low health and computer literacy	Help from proxy users
Damman, 2016 34	Type 2 diabetes, cardiovascular disease, chronic kidney disease	Interviews	Low health and computer literacy, challenges accepting the presented information
Kukafka, 2015 35	Breast cancer	Focus groups, survey	Challenges accepting the presented information
Owens, 2015 36	Prostate cancer	Focus groups, survey		Early user engagement In design
Smith, 2015 43	One or more chronic conditions	Interviews	Low health and computer literacy, challenges accepting the presented information, poor usability and clarity	Early user engagement in design
Rosas, 2014 37	Pregnancy, environmental health	Pre/post test, open-ended interviews		Early user engagement in design
Odlum, 2014 44	HIV/AIDS	Focus groups, survey	Challenges accepting the presented information, poor usability and clarity	Needs for more information
Cogbill, 2014 38	Colorectal cancer	Focus groups, a 3-week feasibility trial	Low health and computer literacy, challenges accepting the presented information, poor usability and clarity	Early user engagement in design, needs for more information
Czaja, 2013 45	Caregivers of patients with dementia	A 5-month randomized clinical trial		Early user engagement in design, needs for more information, proxy users’ help
Bass, 2013 39	Colorectal cancer	Focus groups, survey, segmentation analysis		Early user engagement in design
Lapane, 2012 46	Medication adherence	Cohort study, focus groups, survey	Challenges accepting the presented information, poor usability and clarity	Early user engagement in design
Neuenschwander, 2012 40	Nutrition	1-month randomized, block equivalence trial	Low health and computer literacy