| Parameter |
n (%) |
Χ2(pvalue) |
Β (pvalue) |
OR |
95% CI |
| Demographic characteristics |
| Age group, years |
|
4.283 (0.232) |
|
|
|
| ≤ 25 |
8 (2.5) |
|
|
1 |
|
| 25–44 |
215 (67.8) |
|
− 1.332 (0.108) |
0.264 |
0.052–1.337 |
| 45–64 |
87 (27.4) |
|
− 1.495 (0.077) |
0.224 |
0.043–1.176 |
| ≥ 65 |
7 (2.2) |
|
− 2.015 (0.085) |
0.133 |
0.013–1.318 |
| Education |
|
18.878 (0.000) |
|
|
|
| < SHS |
188 (59.3) |
|
|
1 |
|
| ≥ SHS |
129 (40.7) |
|
1.014 (0.000) |
2.756 |
1.735–4.377 |
| Marital status |
|
0.003 (0.954) |
|
|
|
| 已婚或同居 |
205 (64.7) |
|
− 0.014 (0.954) |
0.986 |
0.620–1.569 |
| Single/widowed/divorced |
112 (35.3) |
|
|
1 |
|
| Occupation |
|
3.117 (0.077) |
|
|
|
| Economically activea |
275 (86.8) |
|
0.620 (0.081) |
1.859 |
0.927–3.728 |
| Not economically activeb |
42 (13.2) |
|
|
1 |
|
| Obstetric characteristics |
| Age at first pregnancy (years) |
12.508 (0.028) |
|
|
|
|
| ≤ 17 |
27 (8.5) |
|
|
1 |
|
| 18–21 |
97 (30.6) |
|
1.605 (0.006) |
4.976 |
1.601–15.470 |
| 22–25 |
76 (24.0) |
|
1.377 (0.020) |
3.961 |
1.247–12.587 |
| > 25 |
59 (18.6) |
|
1.579 (0.009) |
4.852 |
1.492–15.771 |
| Never pregnant |
37 (11.7) |
|
2.021 (0.001) |
7.547 |
2.173–26.214 |
| Do not remember |
21 (6.6) |
|
1.654 (0.017) |
5.227 |
1.336–20.450 |
| Gravidae |
|
4.114 (0.128) |
|
|
|
| 0 |
37 (11.7) |
|
|
1 |
|
| 1 |
36 (11.4) |
|
− 0.272 (0.563) |
0.762 |
0.303–1.915 |
| ≥ 2 |
244 (77.0) |
|
− 0.654 (0.067) |
0.520 |
0.259–1.046 |
| Parity |
|
3.653 (0.301) |
|
|
|
| 0 |
63 (19.9) |
|
|
1 |
|
| 1 |
52 (16.4) |
|
− 0.438 (0.249) |
0.645 |
0.306–1.360 |
| 2–4 |
162 (51.1) |
|
− 0.142 (0.634) |
0.868 |
0.485–1.555 |
| > 5 |
40 (12.6) |
|
− 0.699 (0.097) |
0.497 |
0.218–1.135 |
- Bold font:pvalue <0.05
- aEconomically active—engages in paid work
- bNot economically active—has no paid work, pensioner or housewife
