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Clinical characteristics of controls and cases
| Control | CI | |
|---|---|---|
| Total number | 57 | 22 |
| Age (years) mean ± SD |
38.3 ± 5.1 | 34.0 ± 5.3* |
| Parity (numbers of births) mean ± SD |
2.3 ± 1.0 | 1.7 ± 1** |
| Spontaneous abortions (<week 16) | 35% | 45% |
| Spontaneous abortions 16 to 23+6 weeks | 2% | 59% |
| Termination of pregnancy (before week 12) |
46% | 27% |
| Cesarean section | 19% | 41% |
| Cerclage | 0 | 95% |
Percentage of women who experienced one or more i.e. abortions
*p = 0.02 against control
**p = 0.012 against control
