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Table 1 Individual and work-related characteristics of the study population
| Factors | N (%) |
|---|---|
| Individual | |
| Gender | |
| Men | 27 (5.3) |
| Women | 486 (94.7) |
| Age | |
| 23-29 years | 55 (10.7) |
| 30-39 years | 91 (17.7) |
| 40-49 years | 149 (29.1) |
| 50-70 years | 218 (42.5) |
| Computer work experience | |
| 1-5 years | 115 (22.4) |
| 6-15 years | 287 (55.9) |
| 16-36 years | 111 (21.7) |
| BMI | |
| < 18.5 kg/m2 | 19 (3.7) |
| 18.6-24.9 kg/m2 | 255 (49.7) |
| > 25 kg/m2 | 239 (46.6) |
| Work-related | |
| Duration of working with a computer | |
| < 4 h/day | 20 (3.9) |
| 4-6 h/day | 88 (17.2) |
| > 6 h/day | 405 (78.9) |
| Taking a break every 2 h | |
| Yes | 69 (13.5) |
| No | 444 (86.5) |
| Quantitative demands | |
| Low | 208 (40.5) |
| Average | 143 (27.9) |
| High | 162 (31.6) |
| Cognitive demands | |
| Low | 141 (27.5) |
| Average | 191 (37.2) |
| High | 181 (35.3) |
| Responsibility demands | |
| Low | 142 (27.7) |
| Average | 170 (33.1) |
| High | 201 (39.2) |
| Degree of freedom at work | |
| Low | 242 (47.2) |
| Average | 157 (30.6) |
| High | 114 (22.2) |
| Social support | |
| Weak | 138 (26.9) |
| Average | 183 (35.7) |
| Strong | 192 (37.4) |
