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Specify causal relationships and supporting evidence among treatment, outcome(s), and other variables to identify variables that must be controlled
| Causal diagram (Step 2a): | ||||
|---|---|---|---|---|
| Type and strength of evidence for relationship with treatment | Type and strength of evidence for relationship with outcome | Sources of information | Control? (Y/N, with justification) | |
| Variable 1 | ||||
| . | ||||
| . | ||||
| . | ||||
| . | ||||
| . | ||||
| Variable N | ||||
