| Number of musculoskeletal pain sites except LBP | ||||
---|---|---|---|---|---|
total | 0 | 1 | ≥ 2 | P for trend | |
Participants | 1782 | 1343 | 283 | 156 | Â |
New-onset LBP, n (%) | 251 (14.1) | 155 (11.5) | 53 (18.7) | 43 (27.6) | Â |
Crude OR (95% CI) |  | 1 | 1.77 (1.25–2.49) | 2.92 (1.98–4.30) | <  0.001 |
Adjusted OR (95% CI) |  | 1 | 1.73 (1.16–2.57) | 3.20 (2.01–5.09) | <  0.001 |