1. Agency for Healthcare Research and Quality Healthcare Cost and Utilization Project (HCUP), 2019. Introduction to the HCUP Nationwide Readmissions Database (NRD) 2019.https://www.hcup-us.ahrq.gov/db/nation/nrd/Introduction_NRD_2019.pdf(Accessed 8 February 2022).
2. Agency for Healthcare Research and Quality Healthcare Cost and Utilization Project (HCUP),2021. User Guide: Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses, v2021.2.https://www.hcup-us.ahrq.gov/toolssoftware/ccsr/DXCCSR-User-Guide-v2021-2.pdf(Accessed 8 February 2022).
3. Agency for Healthcare Research and Quality Healthcare Cost and Utilization Project (HCUP),2022. Elixhauser Comorbidity Software Refined for ICD-10-CM.https://www.hcup-us.ahrq.gov/toolssoftware/comorbidityicd10/comorbidity_icd10.jsp(Accessed 8 February 2022).
4. Racial and ethnic disparities in hospital readmissions after delivery;Aseltine;Obstet. Gynecol.,2015
5. Maternal outcomes by race during postpartum readmissions;Aziz;Am. J. Obstet. Gynecol.,2019