Table 4 Hazard ratios of cardiovascular mortality by two categories of lifetime lactation duration (ever vs. never) in parous women < 65 years (n = 15,500) ^a

Age, smoking status, physical activity, education, marital status and parity

2.86 (1.51, 5.39)

Age, smoking status, physical activity, education, marital status, parity +body mass index

2.78 (1.47, 5.27)

Age, smoking status, physical activity, education, marital status, parity, + systolic and diastolic blood pressure, and use of antihypertensive medication

2.76 (1.45, 5.22)

Age, smoking status, physical activity, education, marital status, parity, + triglycerides

2.92 (1.54, 5.51)

Age, smoking status, physical activity, education, marital status, parity, + total cholesterol

2.89 (1.53, 5.45)

Age, smoking status, physical activity, education, marital status, parity, + diabetes

2.72 (1.44, 5.13)

Age, smoking status, physical activity, education, marital status, parity, + body mass index, systolic and diastolic blood pressure, use of antihypertensive drugs, triglycerides, total cholesterol, and diabetes

2.63 (1.39, 4.99)