N | With Persistent LBP | Persistent LBP per 100 men | Age-adjusted OR (95% CI) | Multivariablea OR (95% CI) | Multivariableb OR (95% CI) | |
---|---|---|---|---|---|---|
Physical activity levels | ||||||
High | 1337 | 115 | 8.6 | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) |
Middle | 1343 | 160 | 11.9 | 1.46 (1.14–1.89) | 1.46 (1.13–1.88) | 1.46 (1.13–1.88) |
Low | 1342 | 153 | 11.4 | 1.37 (1.06–1.76) | 1.36 (1.05–1.76) | 1.35 (1.04–1.74) |
P for linearity | 0.009 | 0.009 | 0.012 | |||
Obesity status | ||||||
BMI < 25 | 2768 | 273 | 9.9 | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) |
BMI ≥ 25 | 1254 | 155 | 12.4 | 1.26 (1.02–1.55) | 1.22 (0.99–1.52) | 1.22 (0.98–1.51) |