Table 3.
Comparison of pregnancy outcomes in the cumulative transfer cycles
| Group A | Group B | Rate ratio | P1 | Group C | Rate ratio | P2 | |
|---|---|---|---|---|---|---|---|
| Women = 214 ETC = 311 TE = 536 |
Women = 86 ETC = 116 TE = 198 |
(95% CI) | Women = 125 ETC = 173 TE = 295 |
(95% CI) | |||
| IR% | 48.5 (260/536) |
46.5 (92/198) |
1.044 (0.878–1.241) |
0.623 | 47.5 (140/295) |
1.022 (0.881–1.186) |
0.772 |
| BPR% | 66.9 (208/311) |
67.2 (78/116) |
0.995 (0.857–1.155) |
0.944 | 67.1 (116/173) |
0.997 (0.875–1.136) |
0.969 |
| BPAR% | 4.8 (10/208) |
12.8 (10/78) |
0.375 (0.137–0.861) |
0.018 | 6.0 (7/116) |
0.797 (0.312–2.037) |
0.635 |
| CPR% | 62.7 (195/311) |
58.6 (68/116) |
1.070 (0.898–1.275) |
0.441 | 63.0 (109/173) |
0.995 (0.863–1.148) |
0.947 |
| EMR% | 7.2 (14/195) |
10.3 (7/68) |
0.697 (0.294–1.655) |
0.415 | 14.7 (16/109) |
0.489 (0.248–0.963) |
0.035 |
| OPR% | 57.2 (178/311) |
52.6 (61/116) |
1.088 (0.893–1.326) |
0.389 | 51.4 (89/173) |
1.113 (0.935–1.424) |
0.220 |
| PBR% | 12.6 (22/175) |
10.0 (6/60) |
1.257 (0.535–2.952) |
0.596 | 15.1 (13/86) |
0.832 (0.441–1.570) |
0.571 |
| LBR-t% | 55.3 (172/311) |
51.7 (60/116) |
1.069 (0.873–1.309) |
0.509 | 49.1 (85/173) |
1.126 (0.939–1.350) |
0.192 |
| LBR-c% | 80.4 (172/214) |
69.8 (60/86) |
1.152 (0.988–1.344) |
0.047 | 68.0 (85/125) |
1.182 (1.030–1.356) |
0.010 |
Statistical method: chi-square test
ETC embryo transfer cycle, TE transferred embryos, IR implantation rate, BPR biochemical pregnancy rate, BPAR biochemical pregnancy abortion rate, CPR clinical pregnancy rate, EMR early miscarriage rate, OPR ongoing pregnancy rate, PBR preterm birth rate, LBR-t live birth rate per transfer cycle, LBR-c live birth rate per cycle, P1 comparison of group B with group A, P2 comparison of group C with group A
p < 0.05 was considered to be statistically significant