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Table 1: Interpretation of the Cochrane ladder of evidence.13,14 |
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Can it work? |
Under ideal circumstances, the degree of the intervention producing more benefit than harm |
Efficacy |
Step 1 |
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Does it work? |
The same concept but in the clinical setting |
Effectiveness |
Step 2 |
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Is it worthwhile? |
Measures the intervention effect vs its cost |
Cost/benefit ratio |
Step 3 |