Baby-OSCAR: Outcome after Selective early treatment for Closure of patent ductus ARteriosus in preterm babies—a statistical analysis plan for short-term outcomes

Table 1 Severity-based diagnostic criteria for BPD

Time point of assessment:	36 weeks of postmenstrual age
Therapy with oxygen > 21% and/or respiratory support for ≥ 28 days and the following:
Mild BPD	Baby is breathing room air
Moderate BPD	Baby is in 22–29% oxygen or 0.01–1.0 L/min
Severe BPD	FiO₂ ≥ 0.3, or low flow oxygen ≥ 1.1 L/min, or the baby is receiving any respiratory support (ventilation, CPAP, or high flow oxygen therapy) to achieve saturations of ≥ 91%

ISSN: 1745-6215