RWD16 Impact of COVID-19 Vaccination in Reducing Average Length of Stay in Hospitals Among COVID-19 Patients in the US - a Retrospective Study from De-Identified Administrative Claims Database

Abstract

IntroductionVaccine hesitancy remains one of the key concerns for countries across the globe while managing COVID-19 pandemic. At the same time, multiple COVID-19 waves are putting tremendous stress on the hospitals and is also causing burn out in healthcare workers. Reduction in the average length of stay in hospital has benefits at multiple levels: reduced healthcare cost, less burden on hospitals and hospital staff, and reduced avoidable deaths. This study aims to understand the impact of COVID-19 vaccination on the average length of stay. Thus, it many provide additional evidence to support vaccination and address the concern of vaccine hesitancy.ObjectiveTo study the impact of COVID-19 vaccination in reducing average length of stay among COVID-19 patients in the US.MethodIn this retrospective study, de-identified administrative claims database was used to identify all the patients above 18 years who underwent treatment for COVID-19 in the US between November 2020 to March 2021. The occurrence of ICD-10 code in the claims database was defined as the index event. These patients were then checked for hospitalization for the treatment of COVID-19. The average length of stay was compared between unvaccinated patients, and fully vaccinated patients (who had COVID-19 after 14 days of the second dose of COVID-19 vaccine).ResultsOut of 735,754 COVID-19 patients, 708,586 (96%) were unvaccinated while 1,121 (0.2%) were fully vaccinated patients. Among the unvaccinated the average length of stay was 8.9 days, whereas for fully vaccinated patients, it was 4.7 days. Further statistical test will be applied to analyze the level of significance.ConclusionThere was a 50% reduction in the average length of stay in patients who had taken two doses of COVID-19 vaccine. Therefore, COVID-19 vaccines are effective in reducing the burden on hospitals for treating COVID-19 patients. IntroductionVaccine hesitancy remains one of the key concerns for countries across the globe while managing COVID-19 pandemic. At the same time, multiple COVID-19 waves are putting tremendous stress on the hospitals and is also causing burn out in healthcare workers. Reduction in the average length of stay in hospital has benefits at multiple levels: reduced healthcare cost, less burden on hospitals and hospital staff, and reduced avoidable deaths. This study aims to understand the impact of COVID-19 vaccination on the average length of stay. Thus, it many provide additional evidence to support vaccination and address the concern of vaccine hesitancy. Vaccine hesitancy remains one of the key concerns for countries across the globe while managing COVID-19 pandemic. At the same time, multiple COVID-19 waves are putting tremendous stress on the hospitals and is also causing burn out in healthcare workers. Reduction in the average length of stay in hospital has benefits at multiple levels: reduced healthcare cost, less burden on hospitals and hospital staff, and reduced avoidable deaths. This study aims to understand the impact of COVID-19 vaccination on the average length of stay. Thus, it many provide additional evidence to support vaccination and address the concern of vaccine hesitancy. ObjectiveTo study the impact of COVID-19 vaccination in reducing average length of stay among COVID-19 patients in the US. To study the impact of COVID-19 vaccination in reducing average length of stay among COVID-19 patients in the US. MethodIn this retrospective study, de-identified administrative claims database was used to identify all the patients above 18 years who underwent treatment for COVID-19 in the US between November 2020 to March 2021. The occurrence of ICD-10 code in the claims database was defined as the index event. These patients were then checked for hospitalization for the treatment of COVID-19. The average length of stay was compared between unvaccinated patients, and fully vaccinated patients (who had COVID-19 after 14 days of the second dose of COVID-19 vaccine). In this retrospective study, de-identified administrative claims database was used to identify all the patients above 18 years who underwent treatment for COVID-19 in the US between November 2020 to March 2021. The occurrence of ICD-10 code in the claims database was defined as the index event. These patients were then checked for hospitalization for the treatment of COVID-19. The average length of stay was compared between unvaccinated patients, and fully vaccinated patients (who had COVID-19 after 14 days of the second dose of COVID-19 vaccine). ResultsOut of 735,754 COVID-19 patients, 708,586 (96%) were unvaccinated while 1,121 (0.2%) were fully vaccinated patients. Among the unvaccinated the average length of stay was 8.9 days, whereas for fully vaccinated patients, it was 4.7 days. Further statistical test will be applied to analyze the level of significance. Out of 735,754 COVID-19 patients, 708,586 (96%) were unvaccinated while 1,121 (0.2%) were fully vaccinated patients. Among the unvaccinated the average length of stay was 8.9 days, whereas for fully vaccinated patients, it was 4.7 days. Further statistical test will be applied to analyze the level of significance. ConclusionThere was a 50% reduction in the average length of stay in patients who had taken two doses of COVID-19 vaccine. Therefore, COVID-19 vaccines are effective in reducing the burden on hospitals for treating COVID-19 patients. There was a 50% reduction in the average length of stay in patients who had taken two doses of COVID-19 vaccine. Therefore, COVID-19 vaccines are effective in reducing the burden on hospitals for treating COVID-19 patients.