Table 2

1-OHP concentrations (μmol/mol creatinine) by smoking and alcohol consumption in controls and coke oven workers

		Controls			Coke oven workers^2-150
		n	GM (25, 75 percentile)		p Value	n	GM (25, 75 percentile)	p Value
All	58	0.54 (0.30, 0.80)		162	9.86 (5.00, 18.40)
Smoking:
Never	17	0.50 (0.40, 0.60)	0.58	53	10.74 (5.28, 20.43)	0.35
Ever	41	0.56 (0.30, 1.00)		109	9.51 (4.85, 17.38)
Urinary cotinine (nmol/mol creatinine):
<0.05	21	0.60 (0.40, 0.85)	0.48	52	8.99 (4.55, 18.15)	0.32
0.05–0.90	19	0.58 (0.40, 0.95)		53	9.55 (4.65, 16.70)
>0.90	18	0.45 (0.30, 0.70)		57	11.17 (7.33, 21.48)
Alcohol consumption:
Non-drinkers	41	0.51 (0.30, 0.73)	0.37	99	9.25 (4.90, 16.80)	0.16
Drinkers^2-151	17	0.63 (0.40, 1.02)		63	11.04 (5.15, 23.10)
Mean consumption of ethanol (g/day):
<50	50	0.52 (0.30, 0.80)	0.35	122	9.02 (4.90, 16.80)	<0.01
⩾50	8	0.69 (0.40, 1.55)		40	13.12 (8.70, 27.80)