Table 3.
Outcomes of first embryo transfer cycle.
| Group | Group 1 | Group 2 | Group 3 | Group 4 | P |
|---|---|---|---|---|---|
| No. of cases | 385 | 180 | 165 | 510 | |
| Type of transfer (%) | 0.026 | ||||
| Fresh cycle | 43.64 (168/385) | 42.78 (77/180) | 51.52 (85/165) | 52.16 (266/510) | |
| Frozen cycle | 56.36 (217/385) | 57.22 (103/180) | 48.48 (80/165) | 47.84 (244/510) | |
| No of embryo transferred | 1.39 ± 0.49 | 1.40 ± 0.49 | 1.49 ± 0.50 | 1.48 ± 0.50 | 0.028 |
| Type of transfer embryos (%) | 0.008 | ||||
| cleavage | 52.73 (203/385) | 55.56 (100/180) | 65.45 (108/165)a | 61.96 (316/510)a | |
| blastocyst | 47.27 (182/385) | 44.44 (80/180) | 34.55 (57/165)a | 38.04 (194/510)a | |
| Endometrium (mm) | 10.10 ± 1.93 | 10.22 ± 2.23 | 9.87 ± 1.96 | 10.10 ± 2.12 | 0.443 |
| Clinical pregnancy rate (%) | 64.16 (247/385) | 69.44 (125/180) | 70.30 (116/165) | 64.31 (328/510) | 0.190 |
| Early miscarriage rate (%) | 6.07 (15/247) | 13.60 (17/125) | 12.07 (14/116) | 13.41 (44/328)a | 0.028 |
| Late miscarriage rate (%) | 4.45 (11/247) | 1.60 (2/125) | 6.90 (8/116) | 8.84 (29/328)ab | 0.019 |
| Early pregnancy loss rate | 9.02 (23/255) | 18.18 (24/132) | 17.14 (22/124) | 18.16 (63/347)a | 0.010 |
| Live birth rate (%) | 55.32 (213/385) | 53.33 (96/180) | 55.15 (91/165) | 47.06 (240/510) | 0.060 |
| Single live birth rate (%) | 45.45 (175/385) | 44.44 (80/180) | 43.03 (71/165) | 37.65 (192/510) | 0.096 |
| Low birth weight rate (%) | 6.29 (11/175) | 6.25 (5/80) | 1.41 (1/71) | 6.77 (13/192) | 0.400 |
| Macrosomia rate (%) | 9.14 (16/175) | 11.25 (9/80) | 11.27 (8/71) | 13.02 (25/192) | 0.709 |
| Twin live birth rate (%) | 9.87 (38/385) | 8.89 (16/180) | 12.12 (20/165) | 9.41 (48/510) | 0.740 |
| Low birth weight rate (%) | 52.63 (20/38) | 81.25 (13/16) | 50.00 (10/20) | 56.25 (27/48) | 0.208 |
| Macrosomia rate (%) | 0 | 0 | 0 | 0 |
2 a, Significantly different to Group 1; b, Significantly different to Group 2.