Table 1 The basic characteristics of cases and controls
Characteristics | Cases (459) | Controls (549) | P-value |
|---|---|---|---|
Age (mean ± SD) | 49.09 ± 11.02 | 48.80 ± 8.28 | 0.610 |
Menopausal status | 0.376 | ||
Premenopausal | 237 | 267 | |
Postmenopausal | 222 | 282 | |
Procreative times | 0.657 | ||
< 2 | 242 | 298 | |
≥ 2 | 217 | 251 | |
BMI (kg/m2, mean ± SD) | 23.06 ± 2.92 | 22.45 ± 2.53 | 0.274 |