McManus 1996.

Methods	ITS
Participants	Australia, pharmaceutical benefits scheme
Interventions	Ceiling + Fixed
Outcomes	Medicine use
Notes	Source of funding is not reported
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Not applicable (ITS)
Allocation concealment (selection bias)	Unclear risk	Not applicable (ITS)
Baseline outcome measurement similarity	Unclear risk	Not applicable (ITS)
Baseline characteristics similarity	Unclear risk	Not applicable (ITS)
Protection against contamination	Unclear risk	Not applicable (ITS)
Intervention independent of other changes	Low risk	Intervention is independent of other relevant changes
Shape of the intervention effect pre‐specified	Low risk	Point analysis is the point of intervention
Intervention unlikely to affect data collection	Low risk	Sources and methods were the same before and after the intervention
Incomplete outcome data (attrition bias) All outcomes	High risk	Community and elderly/social welfare policies are not differentiated in the outcomes
Blinding of outcome assessment (detection bias) All outcomes	Low risk	Outcomes are objective
Selective reporting (reporting bias)	Low risk	All relevant outcomes in the Methods section are reported in the Results section
Other bias	Low risk	No other important bias is detected in the study