Table 3. Multivariable hazard ratios (HRs) and 95% confidence intervals of mortality from coronary heart disease according to age at menopause stratified by age at the baseline survey.

	Age at menopause (year)
	≤44	45-46	47-48	49-50	≥51
	Age at baseline survey = 40-64 years
No	6	4	8	6	11
Multivariable HR	1.82 (0.61-5.41)	1.49 (0.47-4.75)	1.61 (0.64-4.07)	0.72 (0.27-1.97)	1.00
	Age at baseline survey = 65-79 years
No	17	12	25	34	55
Multivariable HR	0.65 (0.37-1.15)	0.51 (0.27-0.96)	0.74 (0.46-1.19)	0.59 (0.39-0.91)	1.00

Multivariable adjustment: age, body mass index (kg/m²), history of hypertension and diabetes, current smoking, ethanol intake, marital status, college or higher school, and type of menopause.

The study began in 1988-1990 at baseline, followed until the end of 1999.