Table 2 Body mass index and waist circumference in nulliparous and parous women (n = 26,388)
From: Lactation and cardiovascular risk factors in mothers in a population-based study: the HUNT-study
Women ≤ 50 years of age (n = 14,677) | Women > 50 years of age (n = 11,711) | |||||||
|---|---|---|---|---|---|---|---|---|
No. | Crude mean | Adjusted meana | 95 % CI | No. | Crude mean | Adjusted meana | 95 % CI | |
BMI (kg/m 2 ) | ||||||||
Nulliparous women | 3,011 | 24.8 | 25.8 | 25.5, 26.1 | 2,009 | 27.3 | 26.9 | 26.6, 27.1 |
Parous women | 11,666 | 25.4 | 25.6 | 25.3, 25.9 | 9,702 | 27.5 | 27.3 | 27.1, 27.5 |
P- valueb | 0.026 | <0.001 | ||||||
Months of lifetime lactation | ||||||||
Never | 360 | 27.5 | 27.6 | 27.1, 28.1 | 345 | 27.7 | 27.7 | 27.2, 28.3 |
1–6 | 2,587 | 25.7 | 26.1 | 25.8, 26.5 | 1,834 | 27.1 | 27.2 | 26.9, 27.6 |
7–12 | 3,038 | 25.4 | 25.7 | 25.4, 26.0 | 2,363 | 27.2 | 27.2 | 26.9, 27.5 |
13–23 | 3,513 | 25.1 | 25.3 | 25.0, 25.6 | 2,753 | 27.4 | 27.3 | 27.0, 27.6 |
≥ 24 | 2,168 | 25.1 | 25.1 | 24.8, 25.5 | 2,407 | 28.2 | 27.6 | 27.2, 27.9 |
P- trendc | <0.001 | 0.542 | ||||||
P- trendd | <0.001 | 0.675 | ||||||
Waist cirmcumference (cm) | ||||||||
Nulliparous women | 3,012 | 76.1 | 79.2 | 78.5, 80.0 | 2,009 | 85.3 | 84.2 | 83.6, 84.7 |
Parous women | 11,919 | 78.8 | 79.3 | 78.6, 80.0 | 9,702 | 85.0 | 85.0 | 84.5, 85.5 |
P- valueb | 0.723 | 0.004 | ||||||
Months of lifetime lactation | ||||||||
Never | 360 | 83.4 | 83.9 | 82.6, 85.2 | 345 | 86.3 | 86.9 | 85.7, 88.2 |
1–6 | 2,587 | 79.5 | 80.5 | 79.7, 81.4 | 1,834 | 84.3 | 85.1 | 84.3, 85.9 |
7–12 | 3,038 | 78.8 | 79.7 | 78.9, 80.5 | 2,363 | 84.3 | 84.7 | 83.9, 85.5 |
13–23 | 3,513 | 78.1 | 78.9 | 78.1, 79.8 | 2,753 | 84.4 | 84.6 | 83.8, 85.4 |
≥ 23 | 2,168 | 78.4 | 78.6 | 77.7, 79.4 | 2,407 | 86.8 | 85.4 | 84.5, 86.2 |
P- trendc | <0.001 | 0.03 | ||||||
P- trendd | <0.001 | 0.085 | ||||||