Table 3

Linear regression modelling results identifying predictors of (ln transformed) tibial lead concentrations in 796 Korean lead workers (model adjusted r218.8%)

Independent variables (units of β coefficient) β coefficient (SEM) p Value
Intercept3.248 (0.136)<0.001
Age ((μg/g)/y)3-151 0.006 (0.002)0.006
Age squared ((μg/g)/y2)3-150 3-151 0.0006 (0.0002)<0.001
Female (μg/g)3-151 −0.212 (0.048)<0.001
Job duration ((μg/g)/y)3-151 0.028 (0.003)<0.001
Body mass index ((μg/g)/(kg/m2))3-151 0.017 (0.006)0.004

  • ↵3-150 To account for non-linear associations.

  • ↵3-151 μg Lead/g bone mineral on the natural logarithm scale.