Psychosocial and physical workplace factors as physical strain index among 483 employees and odds ratios (OR) with 95% confidence intervals (CI) for tennis elbow
| Model I* | Model II† | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Female | Male | ||||||||
| n | OR | 95% CI | n | OR | 95% CI | n | OR | 95% CI | |
| *Mutual adjustment for age, body mass index, and the items shown in the column. | |||||||||
| †Mutual adjustment for age, body mass index, and the items shown in the column. | |||||||||
| ‡Physical strain levels established as index from force, repetition, and posture. | |||||||||
| Demands (3 items) | |||||||||
| Low (0–1) | 207 | 1.0 | 111 | 1.0 | 96 | 1.0 | |||
| High (2–3) | 234 | 0.8 | 0.6 to 1.3 | 133 | 0.9 | 0.5 to 1.6 | 101 | 0.7 | 0.4 to 1.3 |
| Control (14 items) | |||||||||
| High (0–5) | 288 | 1.0 | 160 | 1.0 | 128 | 1.0 | |||
| Low (6–14) | 153 | 1.5 | 0.9 to 2.3 | 84 | 1.5 | 0.8 to 2.9 | 69 | 1.4 | 0.7 to 2.6 |
| Social support (4 items) | |||||||||
| High (0–1) | 319 | 1.0 | 187 | 1.0 | 132 | 1.0 | |||
| Low (2–4) | 122 | 1.5 | 0.9 to 2.4 | 57 | 2.4 | 1.3 to 4.6 | 65 | 0.9 | 0.5 to 1.8 |
| Physical strain‡ | |||||||||
| None | 87 | 1.0 | 55 | 1.0 | 32 | 1.0 | |||
| Low | 128 | 1.4 | 0.8 to 2.7 | 70 | 0.8 | 0.3 to 1.8 | 58 | 3.0 | 1.1 to 8.3 |
| Medium | 135 | 2.0 | 1.1 to 3.7 | 78 | 1.6 | 0.7 to 3.7 | 57 | 2.6 | 0.9 to 7.3 |
| High | 91 | 4.4 | 2.3 to 8.7 | 41 | 5.3 | 2.0 to 13.7 | 50 | 4.7 | 1.6 to 13.4 |