Table 3.
Pregnancy and neonatal outcomes of all patients in SERa + and SERa– cycles
| Characteristic | SERa + cycles | SERa—cycles | χ2/t | P-value* |
|---|---|---|---|---|
| No. of embryo transfer cycles, n | 372 | 359 | - | - |
| No. of embryo transferred,% | 0.078 | 0.780 | ||
| 1 | 24.73 (92/372) | 25.63 (92/359) | ||
| 2 or 3 | 75.27 (280/372) | 74.37 (267/359) | ||
| Implantation rate, % | 31.67 (210/663) | 29.25 (189/645) | 0.868 | 0.352 |
| Clinical pregnancy rate, % | 44.89 (167/372) | 42.34 (152/359) | 0.484 | 0.487 |
| Singleton pregnancy rate,% | 31.50 (117/372) | 30.60 (110/359) | 0.056 | 0.813 |
| Twins pregnancy rate,% | 12.40 (46/372) | 10.90 (39/359) | 0.401 | 0.527 |
| Ectopic pregnancy rate, % | 1.10 (4/372) | 0.80 (3/359) | 0.000 | 1.000** |
| Live birth rate, % | 77.80 (129/167) | 79.60 (121/152) | 0.111 | 0.739 |
| Singleton | 59.30 ( 99/167) | 67.10 (102/152) | 2.090 | 0.148 |
| Twins | 18.00 (30/167) | 12.50 (19/152) | 1.827 | 0.176 |
| Spontaneous abortion rate, % | 17.40 (29/167) | 15.80 (24/152) | 0.143 | 0.706 |
| No. of lost follow-up | 5 | 4 | - | - |
| Weeks of gestation, wk | 38.28 ± 1.93 | 38.23 ± 1.72 | 0.824 | 0.361 |
| No. of newborns, n | 159 | 140 | - | - |
| Premature delivery rate, % | 10.90 (14/129) | 15.70 (19/121) | 1.282 | 0.258 |
| Weight of singleton births, kg | 3.14 ± 0.60 | 3.09 ± 0.50 | -0.651 | 0.516 |
| Weight of twin births, kg | 2.50 ± 0.45 | 2.63 ± 0.84 | 1.036 | 0.303 |
| Rate of newborn malformation rate, % | 1.90 (3/159) | 0.70 (1/140) | 0.142 | 0.707** |
Note: Data are presented as mean ± SD for continuous variables and % (n/N) for categorical variables
Implantation rate = No. of gestational sacs/ No. of transfer embryos, clinical pregnancy rate = No. of pregnancy cycles/No. of embryo transfer cycles, ectopic pregnancy rate = No. of ectopic pregnancy cycles/ No. of embryo transfer cycles, live birth rate = No. of live birth cycles/ No. of pregnancy cycles, spontaneous abortion rate = No. of early and late spontaneous abortion cycles/ No. of clinical pregnancy cycles, premature delivery rate = No. of premature cycles/ No. of live birth cycles, newborn malformation rate = No. of malformed newborns/ No. of live births
Premature delivery is defined as babies born from 28 to 37 weeks
*P value calculated with χ2 test or t-test as appropriate
** P value calculated with continuity correction χ2 test