Development and validation of the geriatric trauma frailty index for geriatric trauma patients based on electronic hospital records,Age and Ageing

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Development and validation of the geriatric trauma frailty index for geriatric trauma patients based on electronic hospital records
Age and Ageing ( IF 6.0 ) Pub Date : 2021-08-09 , DOI: 10.1093/ageing/afab186
Fangjie Zhao ₁ , Bihan Tang ₁ , Xu Liu ₁ , Weizong Weng ₂ , Bo Wang ₁ , Yincheng Wang ₁ , Zhifeng Zhang ₃ , Lulu Zhang ₁

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Background Globally, geriatric patients are the dominant population requiring global medical care. We established a frailty index for geriatric trauma patients by retrospectively analysing electronic hospital records to identify patients with frailty characteristics and poor prognostic outcomes. Method Data were obtained from 2016 US National Emergency Department Sample and Shanghai Trauma Emergency Medical Association (2015–18). Overall, 141,267 hospitalised geriatric trauma patients (age ≥ 65 years) were included. We used a three-step method to construct geriatric trauma frailty index (GTFI) based on the International Statistical Classification of Diseases and Related Health Problems, Tenth Revision diagnostic codes. Systematic cluster analysis was used. The accuracy of GTFI was verified in national validation cohort, and its applicability to Chinese patients was assessed in local validation cohort. Results In development cohort (n = 28,179), frail patients had longer lengths of stay and higher Charlson co-morbidity index than non-frail patients (18.2 ± 12.4 days, 5.59 ± 2.0 versus 5.3 ± 5.3 days, 5.33 ± 1.8, respectively). In national validation cohort (n = 113,089), frail patients had longer lengths of stay (8.5 ± 8.8 days versus 4.5 ± 3.1 days) and higher in-hospital mortality than non-frail patients (2,795, 11.69% versus 589, 0.66%). Areas under the curves for GTFI for length of stay (>14 days) and in-hospital mortality were 0.848 (0.841, 0.854) and 0.885 (0.880, 0.891) in national validation cohort, and were 0.791 (0.779, 0.804) and 0.903 (0.885, 0.922) in local validation cohort (n = 14,827). Conclusions The GTFI helps hospitals and emergency departments to identify geriatric trauma patients with poor prognostic outcomes, and has been proven to be useful in China.

更新日期：2021-08-09

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