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Practitioner Guide
Decision Tree
Getting Started
Estimator Guide
Troubleshooting
References
Measuring Campaign Impact on Brand Awareness with Survey Data
Tutorial 18: Geo-Experiment Analysis with SyntheticDiD
Tutorial 19: dCDH for Marketing Pulse Campaigns
Tutorial 20: HAD for a National Brand Campaign with Regional Spend Intensity
Tutorial 21: HAD Pre-test Workflow - Running the Pre-test Diagnostics on the Brand Campaign Panel
Tutorial 22: Survey-Weighted HAD - The BRFSS-Shape Rollout
Spillover-aware DiD with SpilloverDiD — a TVA-style worked example
Basic Difference-in-Differences with diff-diff
Staggered Difference-in-Differences
Synthetic Difference-in-Differences (SDID)
Tutorial 8: Triple Difference (DDD) Estimation
Real-World Data Examples
Triply Robust Panel (TROP) Estimator
Imputation DiD (Borusyak, Jaravel & Spiess 2024)
Two-Stage DiD (Gardner 2022)
Stacked DiD (Wing, Freedman & Hollingsworth 2024)
Continuous Difference-in-Differences
Efficient DiD (Chen, Sant’Anna & Xie 2025)
Survey-Aware Difference-in-Differences
Wooldridge Extended Two-Way Fixed Effects (ETWFE)
Testing Parallel Trends and DiD Diagnostics
Honest DiD: Sensitivity Analysis for Parallel Trends
Power Analysis for Difference-in-Differences
Pre-Trends Power Analysis (Roth 2022)
Tutorial 24: Staggered Rollout or a Simple 2×2? A Power-Analysis Decision Guide
R Comparison
Python Comparison
Benchmarks
API Reference

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Name: diff-diff
Author: diff-diff contributors

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