Table 2 Model parameters and precisions for the relationships between exposure to benzo(a)pyrene (BaP) and benzene‐soluble materials (BSM) and incidence of bladder cancer, lung cancer and acute myocardial infarction.

		Cumulative BSM (mg/m3•year)				Cumulative BaP (μg/m3•year)
		Change in −2 log likelihood*	B	SE	B/SE	Change in –2 log likelihood*	B	SE	B/SE
Bladder cancer incidence, 20‐year lag
Log‐linear model†		7.92	0.0446	0.0150	2.97	10.77	0.0095	0.0028	3.39
Log–log model‡		9.95	0.3323	0.1060	3.13	8.90	0.2082	0.0713	2.92
Lung cancer incidence, 20‐year lag
Log‐linear model	3.90		0.0248	0.0122	2.03	3.22	0.0039	0.0021	1.86
Log–Log model	4.67		0.1744	0.0804	2.17	5.31	0.1162	0.0511	2.27
Acute myocardial infarction, no lag
Log‐linear model	1.52		0.0124	0.0098	1.27	1.32	0.0020	0.0017	1.18
Log–log model	1.84		0.0943	0.0691	1.36	1.88	0.0611	0.0447	1.37

B, slope parameter from model.

*Change in −2 log likelihood compared with the model with age, calendar year and smoking status but no exposure.

†Log‐linear: LogRR = B*CE.

‡Log–log: LogRR = B*ln(CE + 1).