Why the study?
Do different calculation methods influence hospital-specific rates of early death or urgent readmission?
Population
3,148,648 admissions to hospital for 1,802,704 patients in 162 hospitals in Ontario from 2005 to 2010
Design
Cohort
Follow-up
30 days
Authors
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Hospital readmission rankings vary widely by adjustment method; leaves open optimal standardization for fair benchmarking.
Do different calculation methods influence hospital-specific rates of early death or urgent readmission?
Slight changes in the methods used to calculate hospital-specific readmission rates significantly influence their values and the consequent rankings of hospitals.
Walraven et al. (2012) studied this question.
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