Table 2 The cycle characteristics of controlled ovarian stimulation in the two groups
Study group (HMG + MPA + CC; n = 110) | Control group (HMG + MPA; n = 110) | P value | |
|---|---|---|---|
hMG doses (IU) | 1470.0 ± 360.1 | 1943.8 ± 372.0 | < 0.001 |
hMG duration (days) | 9.2 ± 1.3 | 9.1 ± 1.2 | 0.594 |
No. of > 10 mm follicles on trigger day | 17.6 ± 8.4 | 21.2 ± 8.3 | 0.001 |
No. of > 14 mm follicles on trigger day | 13.8 ± 8.4 | 17.2 ± 9.3 | 0.004 |
No. of oocytes retrieved(n) | 12.2 ± 7.4 | 18.2 ± 9.7 | < 0.001 |
No. of maturation oocytes (n) | 10.7 ± 6.3 | 14.6 ± 8.2 | < 0.001 |
No. of fertilization (n) | 8.6 ± 5.6 | 12.6 ± 7.7 | < 0.001 |
No. of viable embryos(n) | 4.8 ± 3.5 | 6.2 ± 3.7 | 0.007 |
Oocyte retrieval rate (%) | 58.8% (1343/2285) | 60.1% (2006/3335) | 0.302 |
Oocyte maturation rate (%) | 87.4% (1174/1343) | 80.3% (1610/2006) | < 0.001 |
The proportion of viable embryo per oocyte retrieved (%) | 39.5% (531/1343) | 33.8% (678/2006) | 0.001 |
Cancellation for no viable embryos (%) | 9.1% (10/110) | 1.8% (2/110) | 0.018 |
Incidence of moderate/severe OHSS (%) | 0.91% (1/110) | 0.91% (1/110) | 1.00 |