Retrospective, propensity score--matched study examining the relationship between frailty and Clostridioides difficile infection in a national cohort of US veterans.

Background: Frailty is often more predictive of disease and mortality compared with chronological age. This study determined the impact of frailty on Clostridioides difficile infection (CDI) risk and outcomes in a national veteran population.

Methods: This was a retrospective cohort study of CDI and control veteran inpatients and outpatients from fiscal year 2003 to 2018.