Table 1.

Case vignettes used in the formative evaluation.

Case vignette	Stage Used	Complexitya	Designer	Number of studies
Acute coronary syndrome	Usability	Easy	Article author (PUb)	2
Rheumatoid arthritis	Problem solving	Complex	Adapted from Medscape [38]	10
Diabetes mellitus	Problem solving	Complex	Adapted from Hirsch et al [39]	10

^aThe complexity level of each vignette was determined by the number of factors involved in each treatment case.

^bPU refers to co-author Prasad Unni.