Validation and Reliability of the Clinical Frailty Scale for Predicting Postoperative Outcomes in Hip Fracture Surgery at Sakon Nakhon Hospital: A Prospective Validation Study
Keywords:
Clinical Frailty Scale, Frailty, Hip Fracture, Postoperative complicationsAbstract
This prospective study aimed to validate the predictive validity and inter-rater reliability of the Clinical Frailty Scale (CFS) for predicting postoperative complications and 30-day mortality in 104 patients aged 60 years and older undergoing hip fracture surgery at Sakon Nakhon Hospital. Patients were assessed preoperatively using the CFS by both physicians and nurses. Data were analyzed using ROC curve analysis, binary logistic regression, Spearman's correlation, and Intraclass Correlation Coefficient (ICC).
Postoperative complications occurred in 66.35% of patients. The overall AuROC of the CFS was 0.77 (95% CI: 0.67–0.86) for predicting postoperative complications and 0.76 (95% CI: 0.53–0.98) for 30-day mortality. A CFS cut-off score of ≥ 5 provided the optimal balance between sensitivity and specificity. Frail patients had 5.74-fold higher odds of developing postoperative complications compared with non-frail patients (OR = 5.74, p < 0.001). Inter-rater reliability between physicians and nurses was excellent (ICC = 0.94). The CFS is a suitable tool for preoperative frailty assessment in older patients with hip fractures in the general hospital setting of Thailand
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