Interventions - Rating Information

Intervention effect(s)

Quality Rating	Definition	Intervention research
High	Further research is very unlikely to change the confidence in the estimate of effect	RCTs Quasi-experimental research and repeated n=1 studies with effect, process and cost-efficiency evaluation conducted
Moderate	Further research is likely to have an important impact on the confidence in the estimate of effect and may change the estimate	Quasi-experimental research and repeated n=1 studies with effect evaluation conducted but no process and/ or cost-efficiency evaluation results
Low iv>	Further research is very likely to have an important impact on the confidence in the estimate of effect and is likely to change the estimate	Quasi-experimental research and repeated n=1 studies with process and/ or cost-efficiency evaluation results but without an effect evaluation being conducted Observational studies providing useful information for identifying possible associations and with process and/ or cost-efficiency evaluation being conducted
Very low	Any estimate of effect is uncertain	Observational studies with process and/ or cost-efficiency evaluation conducted but without providing useful information for identifying possible associations

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