Evidence Network Construction

---
name: evidence-network-construction
description: Build evidence network graph for network meta-analysis — nodes, edges, geometry assessment
execution: subagent
prompt: ./prompt.md
input: treatment_comparisons, study_arms
used-by: meta-analysis
---

# Evidence Network Construction SOP

Build and assess the evidence network graph for network meta-analysis, mapping treatment nodes, direct comparison edges, and evaluating network geometry.

## When to Use

- During network-comparison strategy
- When assessing feasibility of network meta-analysis
- When checking network connectivity and transitivity

## Input

- `treatment_comparisons`: All pairwise comparisons available in included studies
- `study_arms`: Study arm-level data (treatments, sample sizes)

## Output

Complete network geometry description with connectivity assessment, comparison matrix, and transitivity evaluation.