Low back pain reported at the annual follow up measurements in the cohort of workers with no low back pain in the previous 12 months at baseline (n=1192)
| Measurement | Low back pain (%) | Missing data (n) |
|---|---|---|
| Follow up 1 | 12.3 | 131 |
| Follow up 2 | 14.3 | 216 |
| Follow up 3 | 13.7 | 218 |
| Cumulative | 26.6 | 331 |