Meta-Analysis Toolkit

What it does

A step-by-step workflow for conducting and reporting a meta-analysis in psychology, following PRISMA-MA guidelines.

Steps covered

1. Data extraction

• Effect size extraction templates (means, SDs, t-values, F-values, ORs)
• Inter-rater reliability prompts for two-coder extraction
• Missing data request email templates

2. Effect size calculation

• Cohen's d, Hedges's g, r, OR, log OR conversions
• Variance and SE formulas for each metric

3. Meta-analytic model

• Fixed vs. random effects choice guidance
• R code (metafor package) with interpretation
• Subgroup analysis syntax
• Meta-regression prompts

4. Heterogeneity & bias

• I², τ², Q test interpretation
• Funnel plot code
• Egger's test and trim-and-fill
• p-curve and z-curve analysis

5. Reporting

• PRISMA flow diagram text
• Forest plot in ggplot2
• APA-formatted results section
• Table of included studies template