Table 3.

Joint effect of body mass index and waist-hip ratio on the risk of total stroke

	Tertile of body mass index, kg/m²
Tertile of waist-hip ratio	<22.2	22.2–24.9	≥25.0
<0.78
No. of subjects	12491	6747	3199
No. of cases	191	128	106
Multivariate HR^*	1.00 (reference)	1.17 (0.93–1.46)	1.40 (1.10–1.78)
0.78–0.82
No. of subjects	6739	8429	6897
No. of cases	159	234	319
Multivariate HR^*	1.18 (0.95–1.45)	1.36 (1.12–1.64)	1.75 (1.46–2.10)
≥0.83
No. of subjects	3108	7165	12308
No. of cases	120	339	807
Multivariate HR^*	1.31 (1.04–1.65)	1.53 (1.28–1.83)	1.85 (1.57–2.17)

Adjusted for age, education, occupation, family income, menopausal status, use of oral contraceptives, hormone therapy, and aspirin, amount of exercise, cigarette smoking, alcohol consumption, and intakes of saturated fat, vegetables, fruits, and sodium.