Common sampling and modeling approaches to analyzing readmission risk that ignore clustering produce misleading results.
Huaqing ZhaoSamuel TannerSherita H GoldenSusan G FisherDaniel J RubinPublished in: BMC medical research methodology (2020)
Hospital readmission risk models should be based on all discharges as opposed to just the first discharge per patient and utilize methods that account for clustered data.