Table 5 Association between alcohol intake (g per day) and breast cancer risk by hormone receptor status

		ER+		ER−		PR+		PR−
	No. controls	No. cases	OR (95% CI) ^a	No. cases	OR (95% CI) ^a	No. cases	OR (95% CI) ^a	No. cases	OR (95% CI) ^a
All women
None	529	277	1.00^b	215	1.00^b	257	1.00^b	234	1.00^b
>0–<15	412	118	0.62 (0.48–0.81)	74	0.52 (0.38–0.70)	107	0.58 (0.44–0.76)	84	0.56 (0.42–0.75)
⩾15	58	29	1.13 (0.69–1.86)	32	1.56 (0.95–2.53)	28	1.11 (0.67–1.84)	34	1.60 (0.99–2.59)
Premenopausal women
None	332	184	1.00^b	128	1.00^b	178	1.00^b	133	1.00^b
>0–<15	297	89	0.64 (0.47–0.87)	54	0.57 (0.40–0.83)	86	0.63 (0.46–0.86)	56	0.59 (0.41–0.85)
⩾15	38	19	1.03 (0.56–1.92)	19	1.47 (0.78–2.76)	22	1.21 (0.67–2.18)	17	1.35 (0.70–2.61)
Postmenopausal women
None	197	93	1.00^b	87	1.00^b	79	1.00^b	101	1.00^b
>0–<15	115	29	0.56 (0.34–0.94)	20	0.37 (0.21–0.68)	21	0.46 (0.26–0.81)	28	0.47 (0.28–0.79)
⩾15	20	10	1.49 (0.63–3.51)	13	1.80 (0.80–4.05)	6	1.03(0.37–2.87)	17	2.04 (0.97–4.31)

Abbreviations: CI=confidence interval; OR=odds ratio.
^aEstimates from unconditional logistic regression models included terms for age at interview (continuous), education (none, primary, secondary, tertiary), BMI (5-years ago), oral contraceptive use (never, ever), hormone replacement therapy (never, ever), breast cancer in first-degree relatives (no, yes), total energy intake (continuous), folate intake (continuous), tea drinking (no, yes) and menopausal status (no, yes; only for all women).
^bReference category.

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