Table 1.
Data of the three groups undergoing blastocyst transfer
| Group I (n = 174) | Group II(n = 25) | Group III (n = 22) | p | |
|---|---|---|---|---|
| Age(years) | 28.2 ± 4.7 | 28.9 ± 4.2 | 26.3 ± 3.5 | 0.1 |
| Cause of infertility | ||||
| - male | 128 (73.6 %) | 19 (76 %) | 15(68.2 %) | |
| - tubal | 30 (17.2 %) | 4 (16 %) | 4(18.2 %) | |
| - unexplained | 16 (9.2 %) | 2 (8 %) | 3(13.6 %) | |
| Basal FSH(IU/L) | 6.6 ± 1.7 | 6.9 ± 1.4 | 6.8 ± 0.9 | 0.6 |
| AFC | 13 ± 2.1 | 12.6 ± 2.2 | 12.1 ± 2.1 | 0.1 |
| Stimulation days | 11.4 ± 1.5 | 11.2 ± 1.2 | 11.6 ± 0.9 | |
| Number of ampoules | 33.6 ± 6.7 | 33.8 ± 7.1 | 31.8 ± 8.6 | 0.68 |
| Retrieved oocytes | 15.5 ± 5 | 17.1 ± 5.5 | 16.7 ± 4.9 | 0.2 |
| Fertilized oocytes | 11.2 ± 3.6 | 10.2 ± 3.6 | 10.9 ± 3.3 | 0.4 |
| Blastocyst number | 5.1 ± 1.9 | 5.7 ± 1.9 | 3.5 ± 1.3 | < 0.001 |
| Blastocyst formation rate ( %) | 46.2 % ± 0.09 | 56.4 % ± 0.05 | 33.2 ± 0.11 | <0.001 |
| Number transferred | 1.8 ± 0.4 | 2 ± 0.4 | 1.95 ± 0.6 | 0.07 |
| Vitrification of excess embryos | 138/174( 79.3 % ) | 18/25(72 % ) | 6/22( 27.3 % ) | <0.001 |
| Implantation rate | 128/320(40 %) | 20/50 (40 %) | 8/42 (19.04 % ) | 0.02 |
| Clinical pregnancy rate | 106/174 (60.9 %) | 16/25 (64 %) | 6/22 (31.8 %) | 0.04 |
| Live-birth rate | 52.3 % | 56 % | 27.3 % | 0.03 |
| Spontaneous abortion rate | 10/106(9.4 %) | 2/16(12.5 %) | 1/7(14.3 %) | 0.67 |
| Multiple pregnancy rate | 22/106(20.7 %) | 4/16(25 %) | 1/7(14.3 %) | 0.54 |
Data presented as mean±SD. P value determined by analysis of variance, P < 0.05 = significant.