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Propensity score to detect baseline imbalance in cluster randomized trials: the role of the c-statistic
BACKGROUND: Despite randomization, baseline imbalance and confounding bias may occur in cluster randomized trials (CRTs). Covariate imbalance may jeopardize the validity of statistical inferences if they occur on prognostic factors. Thus, the diagnosis of a such imbalance is essential to adjust stat...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4724161/ https://www.ncbi.nlm.nih.gov/pubmed/26801083 http://dx.doi.org/10.1186/s12874-015-0100-4 |