Table 1 Demographic characteristics of the office workers
Items | Whole group (n=969) | Males (n = 359) | Females (n = 610) |
|---|---|---|---|
Age | 28.5 (6.39) | 29.2 (5.92) | 28.1 (6.63) |
BMI | 20.8 (3.11) | 22.2 (3.18) | 20.1 (2.79) |
Working experience (yr) | 6.4 (5.99) | 6.8 (5.89) | 6.1 (1.77) |
Handedness | |||
 Right-handed | 892 (92.1%) | 322 (89.7%) | 570 (93.4%) |
 Left-handed | 52 (5.4%) | 26 (7.3%) | 26 (4.3%) |
Education | |||
 Secondary or below | 106 (10.9%) | 39 (10.9%) | 67 (11.3%) |
 Diploma level | 300 (31.0%) | 104 (29.0%) | 196 (32.1%) |
 Bachelor level | 418 (43.1%) | 172 (47.9%) | 246 (40.3%) |
 Master level or above | 120 (12.4%) | 39 (10.9%) | 81 (13.3%) |
Marital status | |||
 Single | 465 (48.0%) | 171 (47.6%) | 294 (48.2%) |
 Married | 376 (38.8%) | 146 (40.7%) | 230 (37.7%) |
 Divorced | 4 (0.4%) | 3 (0.8%) | 1 (0.2%) |
 Other | 95 (9.8%) | 30 (8.4%) | 65 (10.7%) |
Smoking | |||
 Yes | 112 (11.6%) | 96 (26.7%) * | 16 (2.6%) * |
 No | 823 (84.9%) | 250 (69.6%) | 573 (93.9%) |
Physical exercise | |||
 Yes | 456 (47.1%) | 202 (56.3%) * | 254 (41.6%) * |
 No | 489 (50.5%) | 149 (41.5%) | 340 (55.7%) |
Working days per week (d/w, mean (SD)) | 5.4 (1.39) | 5.4 (0.67) | 5.4 (1.68) |
Daily working hours (hr/d, mean (SD)) | 8.3 (1.53) | 8.4 (1.71) | 8.2 (1.41) |
Daily computer use time (hr/d, mean (SD)) | 7.9 (2.55) | 7.9 (3.03) | 7.8 (2.23) |
Daily keyboard use time (hr/d, mean (SD)) | 6.2 (2.78) | 6.0 (3.09) | 6.3 (2.56) |
Sleep hours per day (hr/d, mean (SD)) | 7.3 (1.01) | 7.2 (0.88) | 7.4 (1.07) |