Table 4

Risk factors of LBP, as defined by pain duration of at least 30 days (n=680)

Predictor OR 95% CI Statistical significance
Sexp=0.035
 Men1.00
 Women1.691.04, 2.76
Age (y)p=0.018
 <301.00
 30–391.600.86, 2.97
 40–492.351.22, 4.53
 >493.331.43, 7.75
BMI (kg/m2)p=0.108
 <20.581.00
 20.58–22.591.090.56, 2.12
 22.60–24.921.981.02, 3.84
 >24.921.790.91, 3.52
PWB scorep=0.003
 01.00
 11.310.72, 2.40
 22.031.10, 3.74
 ⩾3 problems2.831.57, 5.10
Drivingp=0.097
 Never or seldom1.00
 Often or everyday1.530.93, 2.53
Bending posturep=0.007
 Never or seldom1.00
 Often or everyday1.881.18, 3.01
  • Estimated odds ratio (OR) and their 95% confidence intervals (95% CI) based on logistic regression. Sex forced in the model.