From: Effects of permissive hypercapnia on pulmonary and neurodevelopmental sequelae in extremely low birth weight infants: a meta-analysis
Randomization
Concealment of allocation
Blinding of intervention
Completeness of follow-up monitoring
Blinding of assessment
Mariani et al. (1999)
Yes
Adequate
Carlo et al. (2002)
Thome et al. (2006)
Thome et al. (2015)