Table 6
Multivariate analysis of self reported risk factors and low back pain in past 12 months
| Risk factor |
Low back pain PR (95% CI) |
Chronic low back pain PR (95% CI) | Severe low back pain PR (95% CI) | Low back pain and perceived disability PR (95% CI) |
| Age | ||||
| <35 | 1.00 | 1.00 | 1.00 | 1.00 |
| 35–44 | 0.99 (0.82 to 1.20) | 1.31 (0.82 to 2.07) | 1.17 (0.80 to 1.71) | 0.80 (0.47 to 1.36) |
| 45⩾ | 0.98 (0.80 to 1.19) | 1.37 (0.80 to 2.24) | 1.28 (0.82 to 2.02) | 0.97 (0.56 to 1.68) |
| High manual handling of materials | 1.28 (1.06 to 1.54)6-150 | NS | NS | NS |
| High strenuous arm positions | NS | NS | NS | 2.05 (1.21 to 3.49)6-150 |
| Many awkward back postures | NS | NS | 1.52 (1.03 to 2.26)6-150 | NS |
| High perceived exertion | NS | 2.05 (1.19 to 3.53)6-150 | NS | NS |
| High job demands | 1.23 (1.02 to 1.47)6-150 | NS | 1.94 (1.29 to 2.92)6-150 | NS |
| High need for recovery | NS | NS | 1.84 (1.19 to 2.83)6-150 | NS |
| Moderate perceived general health | 1.37 (1.14 to 1.63)6-150 | 2.74 (1.74 to 4.31)6-150 | NS | 2.45 (1.56 to 3.85)6-150 |
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↵6-150 χ2-test, p<0.05.
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NS=not significant; PR=prevalence ratio.
