TY - JOUR T1 - Validating a methodology to measure frailty syndromes at hospital level utilising administrative data JF - Clinical Medicine JO - Clin Med SP - 183 LP - 188 DO - 10.7861/clinmed.2019-0249 VL - 20 IS - 2 AU - John TY Soong AU - Giles Rolph AU - Alan J Poots AU - Derek Bell Y1 - 2020/03/01 UR - http://www.rcpjournals.org/content/20/2/183.abstract N2 - Background Identifying older people with clinical frailty, reliably and at scale, is a research priority. We measured frailty in older people using a novel methodology coding frailty syndromes on routinely collected administrative data, developed on a national English secondary care population, and explored its performance of predicting inpatient mortality and long length of stay at a single acute hospital.Methodology We included patient spells from Secondary User Service (SUS) data for those ≥65 years with attendance to the emergency department or admission to West Middlesex University Hospital between 01 July 2016 to 01 July 2017. We created eight groups of frailty syndromes using diagnostic coding groups. We used descriptive statistics and logistic regression to explore performance of diagnostic coding groups for the above outcomes.Results We included 17,199 patient episodes in the analysis. There was at least one frailty syndrome present in 7,004 (40.7%) patient episodes. The resultant model had moderate discrimination for inpatient mortality (area under the receiver operating characteristic curve (AUC) 0.74; 95% confidence interval (CI) 0.72–0.76) and upper quartile length of stay (AUC 0.731; 95% CI 0.722–0.741). There was good negative predictive value for inpatient mortality (98.1%).Conclusions Coded frailty syndromes significantly predict outcomes. Model diagnostics suggest the model could be used for screening of elderly patients to optimise their care. ER -