Figure 2From: Cycle scheduling for in vitro fertilization with oral contraceptive pills versus oral estradiol valerate: a randomized, controlled trialDistribution of oocyte retrievals across days of the week with OCP and E 2 pretreatment, respectively. Note: Dashed horizontal line at 14.3% (1/7) shows proportion of retrievals per day expected to occur by pure chance.Back to article page