| Methods |
ITS |
| Participants |
Australian Pharmaceutical Benefits Scheme (PBS) enrollees |
| Interventions |
Ceiling + Fixed |
| Outcomes |
Medicine use |
| Notes |
Same study as Hynd 2009
|
| 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 |
No confounding variables/historic events are reported |
| 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 |
Low risk |
No outcome data are missing |
| 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 |
