Assessment of study quality
| Patole et al24 | Stenson et al25 | Oei & Lui26 | Ng et al27 | ElHennawy et al29 | Ng et al28 | Cairns 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 randomisation | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Allocation concealment | Yes | No | Yes | Yes | Yes | Yes | Not clear |
| Blinding of outcome assessment | Yes | No | Yes | Yes | Yes | Yes | Not clear |
| Follow up | Complete | Complete | Not complete | Complete | Complete | Complete | ? Not complete |
| Sample size calculation | Yes | None† | Yes | Yes | Yes | Yes | Not clear |