Integrate economic evidence into SRs per Cochrane Handbook Ch 20 + 20.S. Use when the review includes cost-effectiveness, cost-utility, or cost-benefit analyses. CHEERS 2022 compliance, CHEC-list critical appraisal, ICER extraction and synthesis, decision-model integration. Trigger on "economic evaluation", "cost-effectiveness", "cost-utility", "CUA", "CBA", "CEA", "ICER", "QALY", "CHEERS", "CHEC-list", "cost per", "health economics", "incremental cost". Use ONLY when economic evidence is part of the review scope.