| Before matching |  |  | After matching |  |  |
---|---|---|---|---|---|---|
Parameter | EFPL | GnRH-Ant | P | EFPL | GnRH-Ant | P |
Number of fresh embryo transfer cycles | 967 | 710 | Â | 166 | 166 | Â |
Number of embryos transferred |  |  | < 0.001 |  |  | 0.43 |
 1 | 32.06 (310/967) | 17.46 (124/710) |  | 24.70 (41/166) | 21.08 (35/166) |  |
 2 | 67.94 (657/967) | 82.54 (586/710) |  | 75.30 (125/166) | 78.92 (131/166) |  |
Type of embryo transferred |  |  | < 0.001 |  |  | 0.01 |
 Cleavage embryo | 56.15 (543/967) | 85.49 (607/710) |  | 63.86 (106/166) | 76.51 (127/166) |  |
 Blastocyst | 43.85 (424/967) | 14.65 (104/710) |  | 36.14 (60/166) | 23.49 (39/166) |  |
Number of good embryos transferred |  |  | < 0.001 |  |  | 0.16 |
 0 | 14.99 (145/967) | 9.58 (68/710) |  | 12.65 (21/166) | 6.63 (11/166) |  |
 1 | 34.23 (331/967) | 29.01 (206/710) |  | 28.92 (48/166) | 28.92 (48/166) |  |
 2 | 50.78 (491/967) | 61.41 (436/710) |  | 58.43 (97/166) | 64.46 (107/166) |  |
Chemical pregnancy rate per cycle | 67.94 (657/967) | 49.86 (354/710) | < 0.001 | 65.06 (108/166) | 48.80 (81/166) | < 0.01 |
Clinical pregnancy rate per cycle | 58.12 (562/967) | 41.27 (293/710) | < 0.001 | 56.02 (93/166) | 38.55 (64/166) | < 0.01 |
Live birth rate per cycle | 41.54 (356/857) | 25.90 (166/641) | < 0.001 | 39.49 (62/157) | 29.03 (45/155) | 0.05 |
Twin pregnancy rate | 21.35 (76/356) | 22.29 (37/166) | 0.81 | 19.35 (12/62) | 11.11 (5/45) | 0.25 |
Miscarriage rate | 15.73 (87/553) | 17.54 (50/285) | 0.50 | 21.11 (19/90) | 11.11 (7/63) | 0.10 |
Pregnancy type | Â | Â | 0.42 | Â | Â | 0.89 |
 Intrauterine pregnancy | 98.04 (551/562) | 96.59 (283/293) |  | 96.77 (90/93) | 98.44 (63/64) |  |
 Heterotopic pregnancy rate | 1.60 (9/562) | 2.73 (8/293) |  | 3.22 (3/93) | 1.56 (1/64) |  |
 Simultaneous intrauterine and extrauterine pregnancy | 0.36 (2/562) | 0.68 (2/293) |  | 0 | 0 |  |