A study on outcomes of egg donation: what is a good outcome?

A study published in the Journal of the American Medical Association examined outcome of egg donor cycles in the U. S. But what was their definition of a good outcome?

The authors examined trends and outcomes in donor egg cycles from 2000 to 2010 and analyzed predictors of good perinatal outcomes among in vitro fertilization cycles using fresh (non-cryopreserved) embryos …