Description

This Master Prompt develops an umbrella-review framework for describing and evaluating the frequency, distribution and consequences of conditions or events across populations. It addresses case definitions, denominators, observation periods, prevalence, incidence, mortality, complications, multimorbidity, functional outcomes and economic burden. Drawing on the supplied caregiver-depression, cardiometabolic–renal, psychiatric–metabolic, cancer-costing and antibiotic-consumption papers, it supports the synthesis of diverse population-level evidence while preserving differences in measurement, sampling and context. Particular attention is given to avoiding double-counting, distinguishing screening-positive symptoms from diagnosed conditions, separating prevalence from incidence, and preventing pooled results from being misrepresented as population-representative global estimates. The framework combines evidence organization, appropriate quantitative or narrative synthesis, appraisal, uncertainty assessment and interpretation of inequalities and research gaps.