Table 2. ORs and corresponding 95% CIs among 777 cases of endometrial cancer and 1550 controls according to the combined effect of history of diabetes, BMI, physical activity or history of hypertension. Italy and Switzerland, 1988–2006.

	No diabetes			Diabetes
	Cases	Controls	ORa (95% CI)	Cases	Controls	ORa (95% CI)
BMI at diagnosis (kg m−2)b
<30	526	1278	1c	29	47	1.4 (0.9–2.4)
⩾30	170	196	2.3 (1.8–3.0)	48	24	5.1 (3.0–8.7)
BMI (kg m−2) at age 30–39b
<25	498	1115	1c	34	37	1.8 (1.1–3.0)
⩾25	176	269	1.6 (1.3–2.0)	39	26	3.4 (2.0–5.8)
Physical activity at age 30–39 b
Moderate/high	491	1169	1c	52	50	1.9 (1.3–3.0)
Low	205	300	1.5 (1.2–1.8)	25	21	2.0 (1.0–3.8)
History of hypertension
No	485	1134	1c	34	35	1.8 (1.1–3.1)
Yes	215	345	1.3 (1.0–1.6)	43	36	2.1 (1.3–3.5)

BMI, body mass index; CI, confidence interval; HRT, hormone replacement therapy; OC, oral contraceptive; OR, odds ratio.

^aEstimates from logistic regression models, adjusted by age, year of interview, study centre, education, parity, menopausal status, OC and HRT use, plus current and past BMI, physical activity and history of hypertension when appropriate.

^bThe sum does not add up to the total because of some missing values.

^cReference category.