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. 2020 Apr 15;22(4):e16520. doi: 10.2196/16520

Table 1.

Sociodemographic characteristics in each sample (N=576).

Characteristics Sample 1 (n=20),
n (%)
Sample 2 (n=10),
n (%)
Sample 3 (n=227),
n (%)
Sample 4 (n=319),
n (%)
Sample 5a (n=61),
n (%)
Age group, years

18-24 3 (15.0) 2 (20.0) 128 (56.4) 238 (74.6) 25 (41.0)

25-34 8 (40.0) 5 (50.0) 46 (20.3) 41 (12.9) 13 (21.3)

≥35 9 (45.0) 3 (30.0) 43 (18.9) 38 (11.9) 23 (37.7)

Missing data 0 0 10 (4.4) 2 (0.6) 0
Sex

Female 8 (40.0) 5 (50.0) 117 (51.5) 132 (41.4) 40 (65.6)

Male 12 (60.0) 5 (50.0) 100 (44.1) 186 (58.3) 21 (34.4)

Missing data 0 0 10 (4.4) 1 (0.3) 0
Education, years

<12 7 (35.0) 2 (20.0) 1 (0.4) 0 0

12 5 (25.0) 4 (40.0) 125 (55.1) 143 (44.8) 9 (14.8)

15 6 (30.0) 1 (10.0) 30 (13.2) 116 (36.4) 19 (31.1)

≥17 2 (10.0) 3 (30.0) 61 (26.9) 60 (18.8) 33 (54.1)

Missing data 0 0 10 (4.4) 0 0
Professional status

Unemployed 0 0 5 (2.2) 7 (2.2) 0

Student 3 (15.0) 8 (80.0) 103 (45.4) 235 (73.7) 25 (41.0)

Employed 15 (75.0) 0 103 (45.4) 74 (23.2) 36 (59.0)

Retired 2 (10.0) 2 (20.0) 6 (2.6) 3 (0.9) 0

Missing data 0 0 10 (4.4) 0 0

aSample 5 was a subsample of sample 4.