Fig. 1From: Comparative effectiveness of recombinant human follicle-stimulating hormone alfa (r-hFSH-alfa) versus highly purified urinary human menopausal gonadotropin (hMG HP) in assisted reproductive technology (ART) treatments: a non-interventional study in GermanyPropensity score distribution between cohorts before weighting. Propensity score distribution between cohorts before weighting. The propensity score is the probability of receiving r-hFSH-alfa. The good overlap between these curves demonstrates that there is enough (empirical) equipoise; i.e. there are enough patients with a probability higher than 0 to receive both treatments to allow for a meaningful comparisonBack to article page