Peter J. Godolphin

Exploring Heterogeneity in Meta‐Analysis Using Trial‐Level Characteristics: A Tutorial

ABSTRACT This tutorial describes how to explore across‐trial heterogeneity in meta‐analysis using trial‐level characteristics. It describes how to carry out a subgroup analysis for a trial‐level characteristic with more than two categories and provides approaches for analysing co...

Introduction to Trial‐Level Subgroup Analysis: A Tutorial

ABSTRACT This tutorial introduces the concept of trial‐level subgroup analysis in meta‐analysis. We describe the rationale for conducting subgroup analyses, distinguish trial‐level from participant‐level characteristics, outline how to properly interpret effects within subgroups,...