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. 2021 Mar 22;8(1):e25604. doi: 10.2196/25604

Table 1.

Demographic information of all participants in the first and second iterations.

Variables Iteration 1 Iteration 2
Age (years), mean (SD) 53.2 (13.1) 54.6 (8.7)
Gender, n (%)

Female 4 (80) 3 (60)

Male 1 (20) 2 (40)
EDSSa, median (IQR) 3 (2.5-6) 2.5 (2.5-6)
MSb duration (years), mean (SD) 14 (5.9) 16.2 (9.2)
MS type, n (%)


Primary progressive 1 (20) 0 (0)

Secondary progressive 0 (0) 1 (20)

Relapse remitting 4 (80) 4 (80)
Education, n (%)


High-school diploma 0 (0) 1 (20)

Associate’s degree 2 (40) 1 (20)

Bachelor’s degree 3 (60) 1 (20)

Master’s degree 0 (0) 2 (40)
Mobile device use, n (%)

Owns smartphone 5 (100) 4 (80)

Owns tablet 2 (40) 3 (60)
Mobile device proficiency scale, mean (SD) 36.8 (3.3) 38.3 (1.1)

aEDSS: Expanded Disability Status Scale.

bMS: multiple sclerosis.