Benson 2014.

Methods	STUDY DESIGN: ITS Risk of Bias: LOW
Participants	PROVIDERS: all physicians in the hospital PARTICIPANTS: all patients in the hospital CLINICAL PROBLEM: patients receiving therapeutic antibiotics SETTING: 1 university hospital in the USA
Interventions	FORMAT, Interventions: audit and feedback; educational outreach by academic detailing Intervention Functions: education, enablement, persuasion DELIVERER: AMT COMPARISON: usual care DESIRED CHANGE: decrease excessive
Outcomes	PRESCRIBING: Choice: antibiotic cost per patient day
Notes	FINANCIAL SUPPORT: none. Competing Interests; none declared ADDITIONAL INFORMATION: no response from author
Risk of bias
Bias	Authors' judgement	Support for judgement
Intervention independent (ITS) ?	Low risk
Analysed appropriately (ITS) ?	Low risk	Re‐analysed
Shape of effect pre‐specified (ITS) ?	Low risk	Point of intervention was point of analysis.
Unlikely to affect data collection (ITS) ?	Low risk	Electronic data from pharmacy computer
Knowledge of the allocation adequately prevented(ITS)?	Low risk	Electronic data from pharmacy computer
Incomplete outcome data addressed (ITS) ?	Low risk	Electronic data from pharmacy computer
Free of selected reporting (ITS) ?	Low risk	Electronic data from pharmacy computer
Free of other bias (ITS) ?	Low risk	> 1 year data pre‐ and postintervention