表 1.
早期流产组和对照组一般资料比较
Comparisons of demographic characteristics between the early miscarriage group and control group
| Variables | Early miscarriage group (n=35) | Control group (n=87) | Z/t/χ2 | P |
| N/A, not applicable. | ||||
| Age/years, x±s | 32.1±6.1 | 30.7±5.1 | -1.129 | 0.264 |
| Age at first conception/years, x±s | 26.9±5.1 | 28.0±4.6 | 1.125 | 0.265 |
| Number of pregnancies, M (P25，P75) | 3 (2, 4) | 1 (1, 2) | -6.402 | < 0.001 |
| Artificial insemination, n (%) | 8 (22.9) | 12 (13.8) | 1.496 | 0.221 |
| Hyperthyroidism, n (%) | 0 (0) | 1 (1.1) | N/A | >0.999 |
| Hypothyroidism, n (%) | 6 (17.1) | 7 (8.0) | 1.319 | 0.251 |
| Hypertension, n (%) | 4 (11.4) | 1 (1.1) | N/A | 0.024 |
| Diabetes, n (%) | 2 (5.7) | 1 (1.1) | N/A | 0.198 |
| Hyperlipidemia, n (%) | 0 (0) | 2 (2.3) | N/A | >0.999 |
| Uterine fibroids, n (%) | 2 (5.7) | 12 (13.8) | N/A | 0.346 |
| Malignant tumor, n (%) | 4 (11.4) | 2 (2.3) | N/A | 0.056 |