Table 2

Association between possible confounders and occupational exposure in the subcohort; Netherlands cohort study (1986–92)

Variables		Occupational exposure to:
		Paint components				PAHs			Diesel exhaust		Aromatic amines
		Never	Ever			Never	Ever		Never	Ever	Never	Ever
Potential confounders:
Age (mean, y)	61.40	61.28		61.45	60.74		61.44	61.16	61.38	62.37
Smoking amount (mean, cigarettes/day)^2-150	16.95	16.73		16.90	17.33		16.90	17.00	16.96	15.89
Smoking duration (mean, y)^2-150	33.62	33.58		33.64	32.90		33.75	33.07	33.58	33.83
Total fluid consumption (mean, l/day)	2124	2151		2127	2115		2114	2178	2125	2153
Alcohol consumption (mean, g/day)	14.42	14.84		14.39	15.01		14.60	13.53	14.43	16.65
Coffee consumption (mean, cups/day)	45.53	47.76		45.52	47.39		45.02	48.64	45.71	46.32
Tea consumption (mean, cups/day)	24.78	23.83		25.09	20.75		24.90	23.69	24.65	27.37
Vegetable consumption (g/day)	189.8	182.6		188.0	201.5		186.3	201.6	188.8	218.5
Fruit consumption (g/day)	152.6	138.2		151.3	154.7		149.2	161.8	151.3	165.5
Exposure to:
Paint components (% ever)	0.00	100.00		5.13	40.76		5.19	21.57	8.19	7.14
PAHs (% ever)	5.56	42.86		0.00	100.00		4.03	28.68	8.53	14.29
Diesel exhaust (% ever)	15.82	48.57		14.43	61.75		0.00	100.00	18.29	32.14
Aromatic amines (% ever)	1.32	1.14		1.23	2.17		1.09	2.28	0.00	100.00