NotesFAQContact Us
Collection
Advanced
Search Tips
Publication Date
In 20250
Since 20240
Since 2021 (last 5 years)1
Descriptor
Comparative Analysis1
Correlation1
Error of Measurement1
Longitudinal Studies1
Measurement Techniques1
Programming Languages1
Research Design1
Sample Size1
Statistical Analysis1
Time1
Source
Journal of Educational and…1
Author
Schochet, Peter Z.1
Publication Type
Journal Articles1
Reports - Descriptive1
Education Level
Audience
Location
Laws, Policies, & Programs
Assessments and Surveys
What Works Clearinghouse Rating
Showing one result Save | Export
Statistical Power for Estimating Treatment Effects Using Difference-in-Differences and Comparative Interrupted Time Series Estimators with Variation in Treatment Timing
Peer reviewed Peer reviewed
Direct linkDirect link
Schochet, Peter Z. – Journal of Educational and Behavioral Statistics, 2022
This article develops new closed-form variance expressions for power analyses for commonly used difference-in-differences (DID) and comparative interrupted time series (CITS) panel data estimators. The main contribution is to incorporate variation in treatment timing into the analysis. The power formulas also account for other key design features…
Descriptors: Comparative Analysis, Statistical Analysis, Sample Size, Measurement Techniques