Table 2.

Odds ratios (95% CI) for developing breast cancer according to diabetes diagnosis, stratified by breast cancer risk factors among women diagnosed with breast cancer in 1996–1997, Long Island Breast Cancer Study Project

	Diabetes		No diabetes		ORa	95 % CI	ORb	95 % CI
	Cases	Controls	Cases	Controls
All women	121	95	1,326	1,358	1.24	0.93–1.64	1.27	0.95–1.69
Menopausal status
Premenopausal women	12	18	456	474	0.68	0.32–1.43	0.86	0.40–1.86
Postmenopausal women	109	77	870	884	1.40	1.03–1.91	1.35	0.99–1.85
Age at breast cancer diagnosis
<65 years	50	58	895	968	0.93	0.63–1.38	1.03	0.69–1.55
≥65 years	71	37	431	390	1.74	1.14–2.64	1.59	1.04–2.44
BMI (kg/m2)
BMI >18.5 to <30	67	46	1,061	1,101	1.45	0.99–2.14	1.52	1.03–2.25
BMI ≥30	54	49	265	257	0.98	0.64–1.51	0.99	0.65–1.53
Ever regular lifetime physical activityc
None	52	31	373	371	1.58	0.99–2.53	1.60	0.99–2.59
Any	68	64	946	983	1.06	0.74–1.51	1.09	0.75–1.56
Ever alcohol drinker
Never drinker	69	48	495	515	1.47	1.00–2.18	1.41	0.94–2.09
Ever drinker	52	47	831	843	1.03	0.68–1.55	1.14	0.75–1.73
Average daily caloric intaked
<1,275.1 kcal/day	69	39	665	666	1.67	1.10–2.51	1.66	1.10–2.52
≥1,275.1 kcal/day	43	50	630	651	0.85	0.55–1.30	0.89	0.58–1.38
Ever take hormone replacemente
No	88	59	573	587	1.50	1.06–2.13	1.38	0.96–1.96
Yes	20	18	296	296	1.11	0.57–2.14	1.25	0.64–2.47
Race
White	96	86	1,257	1,251	1.07	0.79–1.45	1.05	0.77–1.43
Other	24	9	103	66	3.14	1.25–7.87	3.89	1.66–9.11

^aAdjusted for 5-year age group

^bAdditionally adjusted for menopausal status, race (white, other), and obesity (BMI <30, BMI ≥30)

^c12 missing responses for any lifetime physical activity

^d87 missing responses for average daily caloric intake

^eAmong postmenopausal women