Table 1.
Population characteristics, including the proportion of subjects recruited from each region in Eastern China, the location, age at menarche, the frequency of full-term births and miscarriages, and the proportion of pre- and post-menopausal women
| Characteristics | Participants | Proportion (%) |
|---|---|---|
|
Regions |
|
|
| Shandong |
61104 |
50.06 |
| Jiangsu |
20921 |
17.14 |
| Hebei |
19741 |
16.17 |
| Tianjin |
20292 |
16.62 |
| Loss value |
0 |
|
|
Location |
|
|
| Urban |
33696 |
27.61 |
| Rural |
88362 |
72.39 |
| Loss value |
0 |
|
|
Age of menarche |
|
|
| 7-11 |
867 |
7.10 |
| 12-13 |
19395 |
15.89 |
| 14 or more |
101744 |
83.36 |
| Loss value |
52 |
|
|
Frequency full-term gestation |
|
|
| <2 |
70719 |
57.94 |
| > = 2 |
51339 |
42.06 |
| Loss value |
0 |
|
|
Number of miscarriages |
|
|
| 0 |
91433 |
74.91 |
| 1 |
20632 |
16.90 |
| 2 |
7398 |
6.06 |
| >2 |
2427 |
1.99 |
| Loss value |
168 |
|
|
Menopausal status |
|
|
| Pre-menopause |
85755 |
70.26 |
| Post-menopause |
36303 |
29.74 |
| Loss value | 0 |