Table 1 Demographic data of the participants (N = 844)
Site 1 | Site 2 | Site 3 | Site 4 | TOTAL | ||
|---|---|---|---|---|---|---|
Sample size | ||||||
As per protocol | 150 | 300 | 300 | 300 | 1.050 | |
Actual enrolment | 150 | 450 | 141 | 103 | 844 | |
Age at enrolment | Mean (SD) | 31.4 (11.1) | 32.3 (8.4) | 32.0 (10.0) | 32.9 (11.5) | 32.19 (9.6) |
Median | 29 | 30 | 30 | 30 | 30 | |
Range (Min–Max) | (18–67) | (18–66) | (19–72) | (18–69) | (18–72) | |
Non-national | ||||||
Yes | 8 (5.3%) | 2 (0.4%) | 1 (0.7%) | 29 (28.2%) | 40 (4.7%) | |
Don’t want to answer | 0 (0.0%) | 0 (0.0%) | 3 (2.1%) | 0 (0.0%) | 3 (0.4%) | |
Missing | 2 (1.3%) | 15 (3.3%) | 0 (0.0%) | 2 (1.9%) | 19 (2.3%) | |
Educational level | ||||||
Primary education or less | 10 (6.7%) | 23 (5.1%) | 2 (1.4%) | 0 (0.00%) | 35 (4.2%) | |
Secondary education | 57 (38.0%) | 103 (22.9%) | 38 (27.0%) | 19 (18.5%) | 217 (25.7%) | |
Undergraduate education | 36 (24.0%) | 316 (70.2%) | 71 (50.3%) | 65 (63.1%) | 488 (57.8%) | |
Postgraduate education | 20 (13.3%) | 5 (1.1%) | 30 (21.3%) | 19 (18.5%) | 74 (8.8%) | |
Don’t know/Don’t want to answer | 0 (0.0%) | 2 (0.4%) | 0 (0.0%) | 0 (0.0%) | 2 (0.2%) | |
Missing | 27 (18.0%) | 1 (0.2%) | 0 (0.0%) | 0 (0.0%) | 28 (3.3%) | |
Employment status | ||||||
Employed | 111 (74.0%) | 345 (76.7%) | 89 (63.1%) | 70 (68.0%) | 615 (72.9%) | |
Unemployed | 9 (6.0%) | 62 (13.8%) | 7 (5.0%) | 13 (12.6%) | 91 (10.8%) | |
Disabled or retired | 4 (2.7%) | 9 (2.0%) | 4 (2.8%) | 1 (1.0%) | 18 (2.1%) | |
Student | 19 (12.7%) | 21 (4.7%) | 36 (25.5%) | 14 (13.6%) | 90 (10.7%) | |
Other | 2 (1.3%) | 1 (0.2%) | 3 (2.1%) | 4 (3.9%) | 10 (1.2%) | |
Don’t know/Don’t want to answer | 0 (0.0%) | 6 (1.3%) | 2 (1.4%) | 0 (0.0%) | 8 (1.0%) | |
Missing | 5 (3.3%) | 6 (1.3%) | 0 (0.0%) | 1 (1.0%) | 12 (1.4%) | |