Table 1.
Demographic characteristics of the study population.
| Characteristics | N | % |
|---|---|---|
| Age (years) | ||
| Mean ± SD | 44 ± 10.5 | / |
| Middle (IQR) | 44(36–52) | / |
| BMI (kg/m2) | ||
| Mean ± SD | 23.9 ± 3.4 | / |
| Middle (IQR) | 23.5(21.6–25.7) | / |
| Ethnicity | ||
| Han | 215 | 58.7 |
| Uyghur | 110 | 30.1 |
| Other* | 41 | 11.2 |
| Education | ||
| Primary school or less | 56 | 15.3 |
| Middle school | 81 | 22.1 |
| High school | 69 | 18.9 |
| Graduate | 160 | 43.7 |
| Age of the first parturition (years) | ||
| Mean ± SD | 25 ± 4.1 | / |
| Middle (IQR) | 24(22–27) | / |
| Contraception | ||
| No contraception | 172 | 47 |
| Condom | 95 | 26 |
| Oral contraceptive | 4 | 1.1 |
| Intrauterine devices | 89 | 24.3 |
| Sterilization | 6 | 1.6 |
| Number of pregnancies | ||
| ≤2 | 147 | 40.2 |
| (3–5) | 192 | 52.5 |
| ≥6 | 27 | 7.4 |
| Number of parities | ||
| ≤1 | 189 | 51.6 |
| >1 | 177 | 48.4 |
| Stages of menopause | ||
| Postmenopausal | 113 | 30.9 |
| Pre-menopausal | 253 | 69.1 |
*
Kazak, Mongolian, Hui, and Kirgiz.
SD, standard deviation; IQR, interquartile range.