The patients with ICP and those without ICP were different in various aspects, and thus, the authors applied a technique of "matching" between the 2 populations and used the analytical method of estimated propensity, which is suitable when there are many variables to "match."
Ambas poblaciones resultaron diferentes en varios ítems por lo cual los autores aplicaron una técnica de "matching" entre ambas poblaciones y utilizaron el procedimiento de análisis de propensión estimada que es adecuado cuando hay numerosas variables a "matchear".