Table 1.
Characteristics of the study subjects
| Subject characteristics | Population-based analysis |
|
|---|---|---|
| Menarche | Natural menopause | |
| No. | 305 | 210 |
| Age (yr) | 60.9 ± 0.6 | 62.9 ± 0.7 |
| Age at menarche (yr) | 13.0 ± 0.1 | 13.1 ± 0.1 |
| Age at menopause (yr) | 46.0 ± 0.4 | 49.4 ± 0.3 |
| Height (cm) | 162.5 ± 0.4 | 162.0 ± 0.0 |
| Weight (kg) | 73.9 ± 0.9 | 73.4 ± 1.1 |
| Use of oral contraceptive (% of sample) | 58.6 | 54.7 |
| Smoking (% of sample) | 16.1 | 16.2 |
| Alcohol consumption (% of sample) | 67.2 | 66.2 |
| Breastfeeding (% of sample) | 57.1 | 56.5 |
| Months of breastfeeding | ||
| None | 43.6 | 44.8 |
| 1–6 | 23.5 | 23.3 |
| 7–12 | 11.4 | 11.4 |
| 13–24 | 11.7 | 9.0 |
| 25 and more | 9.7 | 12.4 |
| No. of pregnancies | 4.0 ± 0.1 | 4.2 ± 0.2 |
| Pregnancies (% of sample) | ||
| None | 3.0 | 1.9 |
| 1 or 2 | 25.9 | 25.9 |
| 3 or 4 | 40.0 | 38.4 |
| 5 and more | 31.1 | 33.8 |