Tightening Blocks in Complementary Analyses of Observational Studies: Optimization Algorithm and Examples

Paul R. Rosenbaum

The American Statistician, 2025, vol. 79, issue 1, 1-9

Abstract: An observational block design has I blocks matched for covariates and J individuals per block, but treatments were not randomly assigned to individuals within blocks, as would have been done in an experiment. Tightening an observational block design means selecting J′

Date: 2025
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DOI: 10.1080/00031305.2024.2393630

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