Table 3.
Risk factors associated with REP by logistic regression analysis.
| Factor | Adjusted OR (95% CI) | P-value |
|---|---|---|
| Infertility factors | ||
| Tubal factor | REF | |
| Compound factors | 1.320 (0.936–1.861) | 0.113 |
| Others | 0.730 (0.378–1.412) | 0.350 |
| Previous EP | ||
| 1 | REF | |
| ≥2 | 0.738 (0.525–1.037) | 0.080 |
| Treatment of last EP | ||
| Salpingectomy | REF | |
| Conservative operation | 1.484 (1.078–2.042) | 0.015 |
| Methotrexate | 1.729 (1.007–2.967) | 0.047 |
| Type of transfer | ||
| Fresh embryo | REF | |
| Thawed embryo | 1.651 (1.203–2.265) | 0.002 |
| Stage of embryo | ||
| Cleavage stage | REF | |
| Blastocyst stage | 0.275 (0.158–0.479) | 0.000 |
| No. of embryos transferred | ||
| 1 | REF | |
| 2 | 0.981 (0.551–1.746) | 0.947 |
| 3 | 1.115 (0.527–2.360) | 0.775 |
Included variables: infertility factors, previous EP, previous treatment of EP, type of embryo transferred, stage of the embryo, and the number of embryos transferred.
OR, odds ratio; CI, confidence interval; REF, reference.