Bronchopulmonary dysplasia of any grade at 36 weeks

How it is measured

Bronchopulmonary dysplasia of ANY severity at 36 weeks postmenstrual age as a binary endpoint. As on the severe-disease endpoint, the grading classification is recorded with each finding and is not optional, and so is whether the diagnosis rested on a systematic oxygen-reduction or pulse-oximetry assessment rather than on the treating clinician's ongoing supplemental oxygen — that choice moves the event rate substantially and the two are not the same endpoint.