Data Source:
We utilized the national readmission database (NRD) from January 2016 to December 2018 to conduct this study.[11] NRD is the largest publicly available all-payer inpatient health care readmission database in the US, containing data from 17 million discharges (unweighted) each year. When weighted, it provides roughly 36 million discharges, accounting for 58% of the total US population and 57% of all US hospitalizations. The NRD is part of a family of databases and software tools developed through a Federal-State-Industry partnership for the Healthcare Cost and Utilization Project (HCUP). It includes a full calendar year of data with diagnosis and procedure codes using the International Classification of Diseases, Tenth Revision, Clinical Modification Diagnostic, and Procedure Coding System (ICD-10-CM and PCS). Due to deidentified nature of this database, this study did not require Institutional Review Board approval.