Table 2.
Univariate analysis of risk factors associated with fresh and frozen cycles.
| Variables | IUP, n (%) | REP, n (%) | χ2 | P-value |
|---|---|---|---|---|
| Total | 908 | 227 | ||
| Type of ART | 0.063 | 0.802 | ||
| IVF | 821 (80.10) | 204 (19.90) | ||
| ICSI | 87 (79.09) | 23 (20.91) | ||
| Type of transfer | 3.370 | 0.066 | ||
| Fresh embryo | 541 (81.85) | 120 (18.15) | ||
| Thawed embryo | 367 (77.43) | 107 (22.57) | ||
| Stage of embryo | 29.013 | 0.000 | ||
| Cleavage stage | 641 (76.22) | 200 (23.78) | ||
| Blastocyst stage | 267 (90.82) | 27 (9.18) | ||
| FET protocols | 0.026 | 0.872 | ||
| Natural cycle | 130 (77.84) | 37 (22.16) | ||
| Artificial cycle | 237 (77.20) | 70 (22.80) | ||
| No. of embryos transferred | 16.933 | 0.000 | ||
| 1 | 200 (89.29) | 24 (10.71) | ||
| 2 | 640 (78.34) | 177 (21.66) | ||
| 3 | 68 (72.34) | 26 (27.66) |