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Univariate analysis.
| Factors | OG (n = 89) | CG (n = 70) | P value | |
|---|---|---|---|---|
| History of menstrual disorder | 0.598 | |||
| Present | 18 | 12 | ||
| Absent | 70 | 58 | ||
| Uterine fibroids | 0.502 | |||
| Present | 12 | 7 | ||
| Absent | 77 | 63 | ||
| Abortion history | 0.012 | |||
| Present | 28 | 10 | ||
| Absent | 61 | 60 | ||
| Pelvic inflammatory disease history | 0.010 | |||
| Present | 25 | 8 | ||
| Absent | 64 | 62 | ||
| Lower abdominal surgery history | 0.008 | |||
| Present | 29 | 10 | ||
| Absent | 60 | 60 |
