Table 3.

Urine~hand model. Multiple regression results for creatinine-adjusted total BPA (µg g⁻¹) at time points 2 and 3 (for hand wipes collected on Day 1) and 6 and 7 (for hand wipes collected on Day 2) regressed on BPA hand levels (µg per sample) and including covariates (73 worker-days, 73 workers).

Dependent variable: ln(total BPACR, µg g−1)a,bn = 144	β (SE)	P-value	Factorc
Intercept	1.3698 (0.8294)	0.0968
Shift time
Mid-shift  End shift	Ref. 0.3481 (0.07898)	<0.0001	1.42
ln(total BPACR at baseline, μg g−1)	0.3438 (0.1106)	0.0027	1.41
BMI, kg m−2	0.03019 (0.02298)	0.1932	1.03
ln (BPA hand, µg per sample at pre-shift)	0.05962 (0.1045)	0.5703	1.06
ln (BPA hand, µg per sample at end shift)	0.4036 (0.09127)	<0.0001	1.50

Ref, referent group.

^aCompound symmetric covariance structure. AIC = 376.1.

^bRegression equation: total BPA_CR, µg g⁻¹ = (e^{1.3698 + 0.3481 (if Shift time=End shift) + 0.03019×BMI}) × (total BPA_CR at baseline, µg g⁻¹)^0.3438 × (BPA pre-shift hand level, µg per sample)^0.05962 × (BPA end-shift hand level, µg per sample)^0.4036.

^ce^β.