Table 3 Summary of enrolment, interventions, and assessments across the study period

Study procedure

Trial research assistant

Trial medical officer

Cardiologist

Perinatal neurologist

Anesthesiologist

Initial approach and expression of interest

x

Verbal consent

x

Application of DR-CPAP

x

Informed consent

x

x

Demographic data collection

x

x

Birth data collection

x

x

Neonatal data collection

x

x

Echocardiogram at 72 h

x

x

Blood pressure at time of echo

x

x

Cranial ultrasound days 1, 3, 7, and 28

x

x

Lung ultrasound daily whilst on CPAP

x

x

Downe’s Score 4 hourly whilst on CPAP

x

x