Reestimación del tamaño de la muestra en diseño de control híbrido ciego utilizando ponderación de probabilidad

Masahiro Kojima1, Shunichiro Orihara2, Keisuke Hanada3

  • 1Department of Data Science for Business Innovation, Chuo University, Tokyo, Japan.

Statistics in medicine
|February 10, 2026
PubMed
Resumen

Los diseños de control híbrido utilizan datos históricos, pero corren el riesgo de pérdida de potencia por diferencias de covariantes. Este estudio propone dos estrategias de reestimación del tamaño de la muestra a ciegas utilizando la ponderación de probabilidad inversa (IPW) para mantener el poder estadístico cuando surgen tales discrepancias.

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