Table 1.
Comparison of general characteristics between the two groups
| Control group (n=62) | Observation group (n=58) | χ2/t | P | |
|---|---|---|---|---|
| Age | 32.95±4.65 | 32.64±5.21 | 0.543 | 0.587 |
| ≥35 | 16 (25.81%) | 19 (32.76%) | ||
| 30-35 | 20 (32.26%) | 21 (36.21%) | ||
| ≤30 | 26 (41.93%) | 18 (31.03%) | ||
| Abortion frequency | 9.087 | 0.006 | ||
| ≥3 | 14 (22.58%) | 28 (48.28%) | ||
| <3 | 48 (77.42%) | 30 (50.72%) | ||
| Antiphospholipid antibody | 4.784 | 0.027 | ||
| Single Yang | 14 (22.58%) | 22 (37.93%) | ||
| Shuangyang | 16 (25.81%) | 14 (24.14%) | ||
| San Yang | 2 (3.23%) | 0 (0.00%) | ||
| Antinuclear antibody | 42 (67.74%) | 37 (63.79%) | 0.897 | 0.357 |
| 25(OH)VD3 | 28.65±9.64 | 23.41±8.64 | -3.078 | 0.001 |
| Maximum platelet aggregation rate | 56.78±17.48 | 6.08±1.57 | 1.987 | 0.047 |
| Average platelet aggregation rate | 52.47±18.27 | 68.57±20.85 | 6.459 | 0.012 |
| BMI | 20.11±1.27 | 20.89±2.27 | 0.398 | 0.078 |
| Smoking | 14 (22.58%) | 13 (22.41%) | 0.108 | 0.754 |
| Drinking | 13 (20.97%) | 13 (22.41%) | 1.497 | 0.475 |
| Previous gestational weeks of miscarriage | 13.43±3.45 | 16.38±2.89 | 1.574 | 0.207 |
Note: BMI: body mass index, 25(OH)VD3: 25-hydroxyvitamin D3.