Table 3. The ORs and 95% CIs for CYP19 genotypes in relation to alcohol consumptiona.

	Arg/Arg	Arg/Cys or Cys/Cys
	(cases/controls)	(cases/controls)
Alcohol consumption
<1/month	1.0	1.2 (0.8–1.9)
	(111/134)	(97/95)
⩾1/month	1.1 (0.7–1.9)	3.3 (1.7–6.5)b
	(39/42)	(41/17)

^aORs adjusted for age, education, body-mass index, family history of breast cancer, age at first full-term pregnancy, and duration of breast feeding:

^bP for interaction=0.044.