Epidemiological Data Analysis Complete workflow for observational epidemiology — from research question to publication-ready report. Write and run Python code for every step. Never describe what you "would do" — do it. Step 1: Formulate the Research Question (PECO Framework) Define P opulation, E xposure, C omparator, O utcome before touching data. - Population : Who? (e.g., adults aged 20-79, cancer patients stage III+, ICU admissions) - Exposure : What factor? (e.g., nutrient intake, drug treatment, gene mutation, environmental pollutant) - Comparator : Vs. what? (e.g., lowest tertile, unex…