Univariate analysis of the association between neck flexion at work and neck pain for workers with a low, medium, and high endurance time of the neck muscles
|
Variable (% of working time) | Low endurance time Crude RR (95% CI)4-151 | Medium endurance time Crude RR (95% CI) | High endurance time Crude RR (95% CI) |
| Neck flexion ⩾20°: | |||
| <60% time | 1.00 | 1.00 | 1.00 |
| >60% time | 2.504-150 (1.11 to 5.61) | 1.32 (0.52 to 3.35) | 1.11 (0.34 to 3.65) |
| Neck flexion ⩾45°: | |||
| <5% time | 1.00 | 1.00 | 1.00 |
| >5% time | 1.894-150 (1.02 to 3.52) | 1.08 (0.57 to 2.05) | 0.84 (0.38 to 1.86) |