Don't Drop the Singletons: Efficient Inference for Pairwise Experiments with Independent Attrition
不要丢弃单例:独立流失下配对实验的有效推断
Pairwise randomization can yield substantial efficiency gains in experiments. Yet methodological guidance cautions against pairwise randomization, especially in settings with attrition, partly because common practices for estimation (i.e., pair fixed effects) imply discarding data from incomplete pairs thus exacerbating data loss from attrition. This practice of dropping incomplete pairs reduces statistical power of tests as well as precision of estimates, in paired…