Table 3.

Results of multiple logistic regression of lung cancer risk on sex, age at randomization, family history of lung cancer, cotinine, total NNAL^a, PheT^b, and years of cigarette smoking

VARIABLES		95% Confidence Limits		P
	ORc	Lower	Upper
Sex (men vs. women)	1.38	0.68	2.79	0.3701
Age at randomization	1.10	1.02	1.18	0.0187
Family history of lung cancer	2.57	0.87	7.60	0.0891
Cotinined	0.85	0.59	1.23	0.3947
Total NNALa,d	1.57	1.08	2.28	0.0182
PheTb,d	1.23	0.88	1.72	0.2274
Years of cigarette smokinge	1.54	0.86	2.75	0.1454

^aNNAL = 4-(Methylnitrosamino)-1-(3-Pyridyl)-1-Butanol; total includes its glucuronides.

^bPheT = r-1,t-2,3,c-4-tetrahydroxy-1,2,3,4-tetrahydrophenanthrene

^cOR = odds ratio

^dRepresents OR associated with a unit standard deviation increase

^eRepresents OR associated with a 10-year increase in smoking duration