Table 3.
The clinical outcome of patients
| Variable | Extended culture | Control | P |
|---|---|---|---|
| No. of oocyte retrieval cycles (n) | 234 | 315 | |
| No. of ET cycles (n) | |||
| Fresh ET cycles | 157 | 235 | |
| FET cycles | 192 | 318 | |
| Total (fresh ET+FET cycles) | 349 | 553 | |
| No. of embryos transferred with good developmental potential (%) | |||
| Fresh ET cycles | 207 (67.87) | ||
| FET cycles | 254 (60.91) | ||
| Total (fresh ET+FET cycles) | 461 (63.85) | ||
| No. of cumulative clinical pregnancies (% oocyte retrieval cycles) | 180 (76.92) | 251 (79.68) | 0.436 |
| No. of cumulative live births (% oocyte retrieval cycles) | 163 (69.66) | 208 (66.03) | 0.369 |
| No. of clinical pregnancies (%) | |||
| Fresh ET cycles | 84 (53.50) | 107 (45.53) | 0.122 |
| FET cycles | 111 (57.81) | 160 (50.31) | 0.100 |
| Total (fresh ET+FET cycles) | 195 (55.87) | 267 (48.28) | 0.026 |
| No. of implantations (%) | |||
| Fresh ET cycles | 110 (36.07) | 136 (28.94) | 0.037 |
| FET cycles | 147 (35.25) | 201 (29.91) | 0.066 |
| Total (fresh ET+FET cycles) | 257 (35.60) | 337 (29.51) | 0.006 |
| No. of abortions (%) | |||
| Fresh ET cycles | 8 (9.52) | 18 (16.82) | 0.144 |
| FET cycles | 13 (11.71) | 34 (21.25) | 0.041 |
| Total (fresh ET+FET cycles) | 21 (10.77) | 52 (19.48) | 0.011 |
| No. of live birth cycles (%) | |||
| Fresh ET cycles | 71 (45.22) | 86 (36.60) | 0.088 |
| FET cycles | 92 (47.92) | 122 (38.36) | 0.034 |
| Total (fresh ET+FET cycles) | 163 (46.70) | 208 (37.61) | 0.007 |
| Total no. of live newborn infants (n) | 218 | 263 | |
| Rate of live newborn infants per transferred cycle (%) | 62.46 | 47.56 | < 0.001 |
| Rate of live newborn infants per transferred embryo (%) | 30.19 | 23.03% | 0.001 |