Table 4.
Relative risk of four outcome indicators of musculoskeletal disorders according to major variables
| Variables | Subjective symptoms, % | Presumptive diagnosis by physician, % | Medical care use (≥7 days/year), % | Sick leave by musculoskeletal diseases% | |
|---|---|---|---|---|---|
| RR (95% CI) | RR (95% CI) | RR (95% CI) | RR (95% CI) | ||
| Age (years) | < 50 | 1.00 | 1.00 | 1.00 | 1.00 |
| ≥50 | 1.04 (1.00–1.09) | 1.17 (1.06–1.30) | 1.26 (0.85–1.85) | 1.17 (1.02–1.34) | |
| Subjective Physical loading | Low | 1.00 | 1.00 | 1.00 | 1.00 |
| Hard | 1.32 (1.21–1.44) | 2.39 (1.84–3.11) | 1.32 (0.68–2.53) | 1.59 (1.21–2.08) | |
| Very hard | 1.45 (1.33–1.58) | 2.92 (2.25–3.78) | 1.91 (1.02–3.59) | 2.11 (1.63–2.74) | |
| Present illness | No | 1.00 | 1.00 | 1.00 | 1.00 |
| Yes | 1.03 (0.98–1.08) | 1.51 (1.37–1.66) | 1.28 (0.78–2.08) | 1.26 (1.06–1.48) | |
| Injury experience | No | 1.00 | 1.00 | 1.00 | 1.00 |
| Yes | 1.04 (0.99–1.08) | 1.05 (0.95–1.15) | 1.60 (1.11–2.30) | 1.16 (1.02–1.33) | |
| Type of school | High | 1.00 | 1.00 | 1.00 | 1.00 |
| Middle | 1.04 (0.98–1.10) | 1.09 (0.96–1.24) | 1.08 (0.62–1.88) | 1.23 (1.02–1.47) | |
| Elementary | 1.00 (0.96–1.05) | 0.99 (0.89–1.11) | 1.46 (0.94–2.26) | 1.16 (0.99–1.36) | |
By log-binomial regression. Adjusted by age, subjective physical loading, present illness, injury experience, and type of school