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. 2013 Nov 5;2013(11):CD000023. doi: 10.1002/14651858.CD000023.pub4

Chapple 1956.

Methods Double‐blind, placebo‐controlled trial
Participants 308 participants older than 2 years. Data from 283 participants included in analyses
Interventions Age‐adjusted oral penicillin, sulphadimidine or barium sulphate (placebo) administered for 5 days
Outcomes Incidence of rheumatic fever, otitis media and symptom of sore throat
Notes All groups received controlled doses of antipyretics twice daily for 3 days
 Data from only 200 participants presenting with sore throat on day 1 included in sore throat analysis
Risk of bias
Bias Authors' judgement Support for judgement
Random sequence generation (selection bias) Low risk Participants randomised by random bottle dispensing
Allocation concealment (selection bias) Low risk  
Blinding (performance bias and detection bias) 
 All outcomes Low risk  
Incomplete outcome data (attrition bias) 
 All outcomes Low risk  
Selective reporting (reporting bias) Low risk All relevant outcomes reported