Table 1

 Multivariable model—predictors of the onset of LBP in children (Jones et al15)

New onset LBPRelative risk (95% CI)
YesNo
Age (years)
    1119 (12.5%)1331.0
    1261 (1630%)3211.6 (0.9 to 2.8)
    1367 (23.8%)2142.1 (1.1 to 3.8)
    1421 (24.1%)662.7 (1.4 to 5.5)
Sex
    Male72 (16.9%)3531.0
    Female96 (20.1%)3821.4 (0.97 to 2.0)
Conduct problems
    Low43 (12.5%)3021.0
    Medium72 (19.6%)2951.6 (1.1 to 2.4)
    High52 (28.7%)1291.9 (1.2 to 3.1)
Sporting activity (past week)
    0–100 min40 (16.1%)2091.0
    120–160 min36 (22.8%)1221.9 (1.1 to 3.3)
    180–220 min18 (11.0%)1451.0 (0.6 to 1.9)
    240–340 min32 (20.9%)1211.8 (1.1 to 3.2)
    ⩾360 min42 (23.3%)1382.3 (1.3 to 3.9)
Abdominal pain (days in past month)
    None69 (15.2%)3851.0
    1–7 days75 (21.0%)2831.3 (0.9 to 1.9)
    >7 days20 (27.0%)541.9 (1.1 to 3.4)