Belongia 2001.

Methods	CBA unit of allocation: community unit of analysis: episode of care (for antibiotic prescribing); childcare center (for antibiotic resistance) power calculation: not done baseline measurement: not done characteristics for studies using second site as control: not done blinded assessment of primary outcome: done protection against contamination: done reliable primary outcome measure: done follow up of professionals: done (for antibiotic prescribing) follow up of patients: not done (for antibiotic resistance) analysis appropriate: no
Participants	185 family practitioners, internists and pediatricians in two communities in Wisconsin, USA and all community residents (particularly parents of young children) being treated for respiratory tract infection
Interventions	1. Multi‐faceted including large and small group educational meetings + printed educational materials for physicians and educational meetings and printed educational materials for childcare providers and parents 2. no intervention control
Outcomes	Professional practice: change in rate of prescribing of oral antibiotics Patient: change in proportion of Streptococcus pneumoniae isolates from children resistant to penicillin
Notes	Campaign message based upon evidence based guidelines: Principles of Judicious Antibiotic Use
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment?	Unclear risk	D ‐ Not used