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Table 1 Selection criteria

From: Journal impact factor, trial effect size, and methodological quality appear scantly related: a systematic review and meta-analysis

a) Selection criteria for inclusion of systematic reviews
 Human
 English or French
 Binary mortality outcome
 5 to 30 eligible RCTs with at least one death
b) Selection criteria for RCT inclusion
 DesignPatient-level RCT (excluded if quasi-randomized or cluster randomized*)
 PopulationHuman
 InterventionAny
 ControlAny
 OutcomeMortality
Numerator/denominator in each group
 JournalJournal impact factor ascertainable
  1. *Quasi-randomized, e.g., alternating allocation, allocation based on chart number, etc.; re: cluster-randomization, an exception was made for studies which randomized mothers and counted neonatal deaths