Table 5

 Assessment of study quality

Patole et al24Stenson et al25Oei & Lui26Ng et al27ElHennawy et al29Ng et al28Cairns et al30,31*
*Published as abstract only.30,31
†Reported data are observations recorded post hoc from a randomised controlled trial of erythromycin for preventing chronic lung disease in ventilated preterm neonates.
Blinding of randomisationYesYesYesYesYesYesYes
Allocation concealmentYesNoYesYesYesYesNot clear
Blinding of outcome assessmentYesNoYesYesYesYesNot clear
Follow upCompleteCompleteNot completeCompleteCompleteComplete? Not complete
Sample size calculationYesNone†YesYesYesYesNot clear