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Table 2 The cycle characteristics of controlled ovarian stimulation in the two groups

From: Progestin-primed milder stimulation with clomiphene citrate yields fewer oocytes and suboptimal pregnancy outcomes compared with the standard progestin-primed ovarian stimulation in infertile women with polycystic ovarian syndrome

  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