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Descriptive statistics for endogenous estrogen variables
| Variables | Mean | SD | Low value | High value |
|---|---|---|---|---|
| Endogenous estrogen exposure, y | 32.99 | 6.89 | 2 | 61 |
| Age at menarche, y | 13.16 | 1.60 | 8 | 20 |
| Age at menopause, y | 47.59 | 6.82 | 16 | 78 |
| Total pregnancies, n | 4.70 | 2.63 | 0 | 20 |
| Total live births, n | 4.06 | 2.19 | 0 | 14 |
| Total of children breastfed, n | 2.41 | 2.36 | 0 | 14 |
| Total months of breastfeeding, n | 14.20 | 17.60 | 0 | 60 |
