1. Institucional Repository Insper
2. Artigos
3. Coleção de Artigos Científicos
4. Balancing tests in stratified randomized controlled trials: A cautionary note

Type:	Artigo Científico
Title:	Balancing tests in stratified randomized controlled trials: A cautionary note
Author:	Firpo, Sergio Pinheiro Foguel, Miguel N. Jales, Hugo
Publication Date:	2020
Abstract:	We study the properties of imbalances tests of predetermined characteristics (covariates) in stratified randomized controlled trials. When the parameter of interest is a weighted average of the causal effects at all strata, then a test statistic based on a fixed effects regression model may suffice to detect the relevant imbalances. This will be true under a condition on the partial correlation between covariates and the outcome variable (uniformity condition). If that condition is violated, then the test based on the fixed effects regression will lack power. In that case, a test based on the fully saturated regression model can overcome this problem. Finally, we provide an omnibus test for the relevance of controlling for the covariates when estimating the average treatment effect (ATE).
Keywords (english terms):	Balancing tests Stratification Randomized controlled trial
Language:	Inglês
CNPq Area:	Ciências Exatas e da Terra
URI:	https://www.sciencedirect.com/science/article/pii/S0165176519303878?via%3Dihub
Copyright:	O INSPER E ESTE REPOSITÓRIO NÃO DETÊM OS DIREITOS DE USO E REPRODUÇÃO DOS CONTEÚDOS AQUI REGISTRADOS. É RESPONSABILIDADE DO USUÁRIO VERIFICAR OS USOS PERMITIDOS NA FONTE ORIGINAL, RESPEITANDO-SE OS DIREITOS DE AUTOR OU EDITOR.
Notes:	Texto Completo
Appears in Collections:	Coleção de Artigos Científicos

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.