Evans 2007.

Methods	CBA design Intervention run from June to August 2003, with units implementing it over a 40‐week period
Participants	Nursing staff working in 20 units in four major cities and two regional hospitals of South Australia
Interventions	Intense education, a range of reporting options, changes in report management and enhanced feedback
Outcomes	Incident reporting rate
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	High risk	Non random allocation
Allocation concealment (selection bias)	Unclear risk	Not specified in the paper
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	Not specified in the paper
Selective reporting (reporting bias)	Low risk	All outcomes analysed.
Other bias	Low risk	None identified.
Allocated intervention	Low risk	Objective outcome data
Baseline outcome measurement similar?	High risk	See Table 2
Baseline characteristics similar?	High risk	See Table 1
Protection against contamination?	Low risk	No evidence of contamination