Association between breastfeeding duration and lifetime duration of menstrual activity
| Parameter | Lifetime duration of menstrual activity |
|||||
|---|---|---|---|---|---|---|
| Model 1 |
Model 2 |
Model 3_1 |
Model 3_2 |
Model 4_1 |
Model 4_2 |
|
| BF duration | ||||||
| Less than 1 mo | 34.36±0.24 | 34.28±0.24 | 34.43±0.25 | 34.44±0.24 | 34.39±0.25 | 34.39±0.25 |
| 1≤BF<6 mo | 34.96±0.28 | 34.64±0.28 | 34.85±0.27 | 34.84±0.27 | 34.85±0.27 | 34.83±0.27 |
| 6≤BF<12 mo | 35.07±0.34 | 34.87±0.33 | 34.99±0.34 | 34.99±0.34 | 34.99±0.34 | 34.99±0.34 |
| 12≤BF<18 mo | 35.07±0.23 | 34.87±0.24 | 35.01±0.24 | 35.01±0.24 | 35.01±0.24 | 35.01±0.24 |
| 18 mo≤BF | 35.01±0.11 | 35.07±0.11 | 35.18±0.11 | 35.18±0.11 | 35.19±0.11 | 35.19±0.11 |
| P-value | 0.1378 | 0.0619 | 0.0994 | 0.0993 | 0.0747 | 0.0721 |
| P for Trend | 0.0297 | 0.003 | 0.0062 | 0.0061 | 0.0045 | 0.0042 |
Values are presented as mean±standard error.
BF, breastfeeding; BMI, body mass index; DM, diabetes mellitus; HTN, hypertention; CVD, cardiovascular disease; CVA, cardiovascular accidents (composite of 4 disease; hypertention, stroke, myocardial infarction, and angina).
aLifetime duration of menstrual activity=menopausal age–the age of menarche. bAdjusted for age. cAdjusted for age, BMI, smoking status, alcohol drinking, income, and education. dAdjusted for age, BMI, smoking status, alcohol drinking, income, education, DM, HTN, stroke, CVD, and oral pill. eAdjusted for age, BMI, smoking status, alcohol drinking, income, education, DM, CVA, and oral pill. fAdjusted for age, BMI, smoking status, alcohol drinking, income, education, DM, HTN, stroke, CVD, oral pill, and gravidity. gAdjusted for age, BMI, smoking status, alcohol drinking, income, education, DM, CVA, oral pill, and gravidity.