# Overlap Tab

## Introduction

The Overlap tab shows how often active concepts co-occur in the same patients.

Overlap matrix

## Components

- Group selector: inspect `Overall` behavior or a specific cluster.
- Overlap visualization: pairwise concept relationships among currently active concepts.
- Pairwise table: sortable/filterable table with metrics such as correlation, Jaccard, and co-occurrence counts.

Pairwise overlap table

## Interpretation

- High overlap suggests concepts often appear together in the same patients.
- Compare `Overall` versus cluster-specific overlap to identify cluster-specific treatment or diagnosis bundles.
- Use overlap findings to guide concept merge decisions in the Mappings tab.