Table 4.

Summary of measurements in 46 spray painters^a stratified by paint booth type

Variable	Booth type	nb	Nc	Summary statistics			P-valuesd
				GM	GSD	Range
Plasma HDA (μg)	Downdraft	31	72	0.15	3.48	<0.02–2.85	0.0108
	Semi-downdraft	10	21	0.35	3.53	<0.02–3.61
	Crossdraft	6	15	0.26	2.79	0.03–0.83
	Overall	46	108	0.29	3.53	<0.02–3.61
HDI adjusted inhalation (μg)	Downdraft	31	72	0.05	9.35	<0.0002–5.91	0.0051
	Semi-downdraft	10	21	0.05	10.5	0.001–1.70
	Crossdraft	6	15	0.39	5.04	0.013–4.94
	Overall	46	108	0.07	9.76	<0.0002–5.91
HDI unadjusted inhalation (μg)	Downdraft	31	72	1.18	4.46	<0.02–59.1	<0.0001
	Semi-downdraft	10	21	6.88	2.49	0.84–21.4
	Crossdraft	6	15	3.33	4.80	0.13–49.4
	Overall	46	108	1.92	4.84	<0.02–59.1
HDI dermal (μg)	Downdraft	31	72	1.94	7.31	<0.10–1023	<0.0001
	Semi-downdraft	10	21	28.8	8.82	0.24–440
	Crossdraft	6	15	33.3	8.91	1.14–538
	Overall	46	108	4.86	11.2	<0.10–1023

^aAmong workers performing paint tasks on day of sample collection (N = 108). Multiple imputation (n = 10 imputed datasets) was used to impute plasma data below MDL.

^bNumber of workers.

^cNumber of samples.

^dP-value determined using Tukey–Kramer multiple comparisons testing.