Table 2.
Ovarian stimulation outcomes in three groups
| Item | Control | Nonsurgery | Surgery | P value |
|---|---|---|---|---|
| Gn initial dosage, IU | 273.31 ± 67.41 | 286.84 ± 95.44 | 293.31 ± 82.89 | 0.471 |
| Duration of Gn stimulation, d | 8.98 ± 2.01 | 9.39 ± 2.55 | 8.59 ± 2.25 | 0.254 |
| Total dosage of Gn per cycle, IU | 2438.92 ± 788.71 | 2807.23 ± 935.16 | 2654.73 ± 811.35 | 0.065 |
| Average transfer endometrial thickness, mm | 9.67 ± 1.52 | 9.64 ± 2.17 | 10.17 ± 1.96 | 0.944 |
| Oocytes MII retrieved, n | 19.92 ± 7.12a | 9.47 ± 6.32b | 12.32 ± 9.19c | 0.000 |
| High-quality embryo rate | 39.10 ± 26.10 | 35.12 ± 29.74 | 36.40 ± 28.72 | 0.740 |
| Cycle of transfer | 0.020 | |||
| Fresh embryo transfer cycle | 30 (28.0) | 43 (44.8)a | 19 (27.9)b | |
| Frozen-thawed embryo transfer cycle | 77 (72.0) | 53 (55.2) | 49 (72.1) | |
| Protocol of ovary stimulation | 0.539 | |||
| Short protocol | 3 (4.9) | 4 (6.8) | 4 (9.5) | |
| Long protocol | 40 (65.6) | 33 (55.9) | 27 (64.3) | |
| GnRH-A protocol | 18 (29.5) | 19 (32.2) | 10 (23.8) | |
| Natural-cycle protocol | 0 (0) | 3 (5.1) | 1 (2.4) | |
| Endometrium preparation protocol | 0.719 | |||
| Natural-cycle | 64 (83.1) | 42 (79.2) | 38 (76.7) | |
| HRT | 13 (16.9) | 11 (20.8) | 11 (22.4) | |
| Patients undergoing embryo transfer | 0.332 | |||
| Cleavage transfer rate | 98(91.6) | 88(91.7) | 58 (85.3) | |
| Blastocyst transfer rate | 9 (8.4) | 7 (7.3) | 10 (14.7) | |
| Sequential transfer rate | 0 (0) | 1 (1.1) | 0 (0) | |
| High-quality embryo transferred rate | 84 (78.5) | 65 (67.7) | 46 (67.6) | 0.153 |
| No. of embryos transferred, n | 1.77 ± 0.47 | 1.74 ± 0.57 | 1.66 ± 0.51 | 0.415 |
| Average transfer times to live birth, times | 1 (1,2) | 2 (1,2) | 1 (1,1)c | 0.023 |
Values are presented as the mean standard deviation, n (%) or median (lower quartile, upper quartile)
Gn Gonadotropin, GnRH-A Gonadotropin Releasing Hormone Antagonist, HRT Hormone Replacement Treatment cycle
a shows that there were significant differences between the nonsurgery group and the control group
b shows that there were significant differences between the surgery group and the control group
c shows that there were significant differences between the surgery group and the nonsurgery group