Table 8

Selected conditional logistic modelling results for leukaemia for cases and controls with known values for potential confounders, from Schnatter et al (1996)25

Model p value^8-150	Variable	OR (95% CI)	Variable p value^8-151
0.11	Family history of cancer	5.53 (0.54 to 56.6)	0.15
0.02		Family history of cancer	14.0 (1.04 to 188.0)	0.05
0.02		Ever smoked cigarettes	8.89 (0.66 to 119.0)	0.10
0.06	Family history of cancer	11.5 (0.83 to 160.0)	0.07
	Ever smoked cigarettes	6.93 (0.48 to 100.0)	0.16
	Cumulative exposure to benzene	0.97 (0.82 to 1.15)	0.72

↵8-150 Based on score statistic.
↵8-151 Based on Wald χ² statistic.