Analysis for effect modification by cumulative job exposure on the associations between neck-shoulder pain in 1994 and neck-shoulder pain/physical functioning in 2008
| Variables | Categories | Low job exposure* | High job exposure* | ||
| OR | 95% CI | OR | 95% CI | ||
| Moderate/severe neck-shoulder pain 2008 | n=75 | n=72 | |||
| Neck-shoulder pain 1994 | None/mild pain | 1 | Ref. | 1 | Ref. |
| Moderate/severe pain | 12.0 | 3.2 to 44.4 | 9.1 | 2.4 to 34.0 | |
| Low physical functioning 2008 | n=80 | n=72 | |||
| Neck-shoulder pain 1994 | None/mild pain | 1 | Ref. | 1 | Ref. |
| Moderate/severe pain | 2.2 | 0.7 to 6.4 | 1.9 | 0.6 to 5.8 | |
| Analysis for effect modification only on those still working in 2008 (n=74) | |||||
| Moderate/severe neck-shoulder pain 2008 | n=24 | n=50 | |||
| Neck-shoulder pain 1994 | None/mild pain | 1 | Ref. | 1 | Ref. |
| Moderate/severe pain | 11.5 | 0.6 to 217.6 | 20.8 | 3.5 to 122.8 | |
| Low physical functioning 2008 | n=24 | n=48 | |||
| Neck-shoulder pain 1994 | None/mild pain | 1 | Ref. | 1 | Ref. |
| Moderate/severe pain | 1.5 | 0.2 to 13.0 | 1.5 | 0.4 to 6.4 | |
The lower part of the table presents this analysis for the subgroup still working in 2008.
*Adjusted for age squared, comorbidity 1994–2008 and number of transitions between different income types 1994–2008.