Rosales 1996.

Methods	Randomized, double‐blind, placebo‐controlled clinical trial
Participants	200 children with acute measles not requiring hospitalization
Interventions	Single dose of 200,000 IU vitamin A in oil (100,000 IU for infants) or placebo
Outcomes	Measles‐associated cough or pneumonia, croup, fever, diarrhea Failure to improve from pneumonia
Notes	Quality score 5
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	1:1 randomization scheme was used to allocate vitamin A or placebo treatment Allocation of bottle codes for each series of 100 participants identification numbers was accomplished using a random numbers table
Allocation concealment (selection bias)	Low risk	Adequate
Blinding (performance bias and detection bias) All outcomes	Low risk	Double‐blinded
Other bias	Low risk
Blinding of participants and personnel (performance bias) All outcomes	Low risk
Blinding of outcome assessment (detection bias) All outcomes	Low risk

mo = months