The impact of polypharmacy on 30-day COVID-related mortality in nursing home residents: a multicenter retrospective cohort study.

Purpose: Both the coronavirus (COVID-19) disease and polypharmacy pose a serious threat to nursing home (NH) residents. This study aimed to assess the impact of polypharmacy on 30-day COVID-related mortality in NH residents with COVID-19.

Methods: Multicenter retrospective cohort study including NH residents from 15 NHs in the Netherlands.