Table 2.

Distribution of smoking status by cytologic atypia and metaplasia

Category	Variable	Non-smokers	Smokers	Total	OR (95% CI)	z statistic
Lung Epithelial Cytologic Atypia					29.73 (3.82-230.87), P = 0.0001	3.244
	Yes	1	13	14
	No	199	87	286
	Total	200	100	300
Lung Epithelial Metaplasia
	Present	19	26	45	3.34 (1.74-6.41), P = 0.0003	3.640
	Absent	181	74	255
	Total	200	100	300