Validation of the Hospital Frailty Score in France

"This multi-centric retrospective observational cohort study is conducted using the PMSI. Predictive ability of HFRS estimated on the basis of 3 binary outcomes: 30-day in-patient mortality (main outcome), 30-day emergency and potentially avoidable readmission, length of stay \>15 days. Odds ratios (ORs) and c-statistics calculated and compared to the original UK results in order to validate the use of the HFRS in France. Other secondary objectives include:~* Evaluate agreement between HFRS and Charlson or Elixhauser comorbidity indices~* Evaluate ability of HFRS combined with comorbidity indices (Charlson on one hand, and Elixhauser on other hand), to predict 30-day in-patient mortality, 30-day emergency and potentially avoidable readmissions, and long length of stay~* Identify specific risk associations in France of a high risk of frailty (as assessed by the HFRS) with individual, organizational and territorial factors"