Table 3

Multiple regression analyses for the association of hand VPT (natural log transformed) with lead exposure indices and potential confounders in a group of workers exposed to lead long term (all models were adjusted for sex, body height, smoking, alcohol, and use of hand vibration tools)

Independent variables Model 1 β (SE) Model 2 β (SE) Model 3 β (SE) Model 4 β (SE) Model 5 β (SE) Model 6 β (SE)
Current PbB (μg/dl)0.0020  (0.0029)
Max PbB (μg/dl)0.0035  (0.0026)
Mean PbB (μg/dl)0.0036  (0.0032)
ICL (year3-150μg/dl)−0.0001  (0.0001)
TWICL (μg/dl)0.0029  (0.0032)
Life span in the work (%)−0.5375  (0.2460)3-150
Age (y)0.0189 (0.0048)3-160 0.0184 (0.0048)3-160 0.0186 (0.0048)3-160 0.0207 (0.0051)3-160 0.0186 (0.0048)3-160 0.0192 (0.0048)3-160
  • 3-150 p<0.05;

  • 3-160 p<0.01.

  • β=Regression coefficients (SEs).