What is Syrona? | How it differs from other OHDSI tools | Installation | Dependencies | Quick start | 1. Connect to a database | 2. Extract a dataset | 3. Compare two datasets | 4. Disconnect | Output structure | Next steps

Overview | Connecting to a database | PostgreSQL database | DuckDB (local files) | Running extraction | All domains (default) | Single domain | Shorthand: pass a DuckDB path directly | What each extractor does | Denominators (ACHILLES-116) | Condition prevalence (ACHILLES-404) | Condition chapters | Drug prevalence | Drug chapters | Procedure chapters | k-Anonymity | Loading and listing datasets | Disconnect

Overview | Defining a cohort | Care-site cohorts | Create cohorts | Extract by cohort | Verify a cohort | Delete a cohort | Cohorts from data frames | Care-site cohort options | Collapse strategy | Observation period clipping | How cohort filtering works | Compatibility with other OHDSI tools

Step 0 - Prerequisites | Finding your schemas | Step 1 - Open the SSH tunnel and connect | Verify | For local DuckDB users | Step 2 - Explore care sites | Step 3 - Create two cohorts | Step 4 - Extract the first cohort | Step 5 - Extract the second cohort | Step 6 - Compare | Step 7 - Launch the dashboard | Step 8 - Cleanup and disconnect | Troubleshooting | install_github() fails with "HTTP error 401 / Bad credentials" | "Could not connect" / "Connection refused" | "Permission denied for schema ..." | dbListTables() returns empty | "Cohort 1: 0 rows inserted" | extract_all() is very slow | Dashboard launches but dropdowns are empty | What to read next

Overview | Running a comparison | All domains | Single domain | Step-by-step usage | Prevalence ratio formula | Output columns | Meta-analysis strategy | Heterogeneity metrics | Loading and listing comparisons