Skip to main content

Table 3 Treatment outcome parameters

From: Cycle scheduling for in vitro fertilization with oral contraceptive pills versus oral estradiol valerate: a randomized, controlled trial

Parameters OCP E2 Risk difference (%) (95% CI) P value
  (n = 50) (n = 50)   
Implantation rate a 43.5% (30/69) 47.4% (27/57) 3.9 0.79
(-13.4 to 21.1)
Pregnancy rate per cycle 56.0% (28/50) 52.0% (26/50) -4.0 0.84
(-23.1 to 15.4)
Clinical pregnancy rate per cycle 50.0% (25/50) 48.0% (24/50) -2.0 0.99
(-21.3 to 17.4)
Early clinical miscarriage b rate per pregnancy 7.1% (2/28) 7.7% (2/26) 0.6 0.66
(-16.4 to 18.3)
Ongoing pregnancy rate per cycle 46.0% (23/50) 44.0% (22/50) -2.0 0.99
(-21.2 to 17.3)
Live birth rate per cycle 42.0% (21/50) 40.0% (20/50) -2.0 0.99
    (-21.0 to 17.1)  
  1. aImplantation rate is the number of intrauterine sacs with heartbeat / number of transferred embryos.
  2. bClinical pregnancies with miscarriage at <12 weeks of gestation.
  3. CI confidence interval.