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Table 3 Pregnancy and live birth outcomes after FET

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)
Control group
(HMG/MPA)
Risk Ratio (95% CI) P value
Rates per embryo transfer
 Clinical pregnancy rate 73.9%(88/119) 62.5%(105/168) 1.70 (1.02, 2.85) 0.042
 Implantation rate 52.2%(119/228) 42.7%(140/328) 1.47(1.04, 2.06) 0.027
 Ectopic pregnancy rate 1.1%(1/88) 1.9%(2/105) 0.59(0.05, 6.64) 0.667
Miscarriage rate
 Early miscarriage 9.1%(8/88) 12.4%(13/105) 0.71(0.28,1.79) 0.465
 Later miscarriage 6.8%(6/88) 5.7%(6/105) 1.21(0.38,3.89) 0.752
 Ongoing pregnancy rate 66.4%(79/119) 53.6%(90/168) 1.71(1.05,2.78) 0.030
 Live-birth rate 59.7%(71/119)a 49.4%(83/168)a 1.52(0.94,2.44) 0.086
Rates per participant
 Ongoing pregnancy rate 71.8%(79/110) 81.8%(90/110) 0.57(0.30,1.07) 0.079
 Live birth rate 64.5%(71/110)a 75.5%(83/110)a 0.59(0.33,1.06) 0.077
Newborns
 Single birth (n) 50 60   
 Single birthweight (g) 3270.4 ± 644.9 3357.0 ± 437.1   0.422
 Twin birth (n) 21 23   
 Twin birthweight (g) 2371.7 ± 460.7 2460.0 ± 423.5   0.497
  1. a3 pregnant women lost to follow up to live birth (2 in study group and 1 in control group)