Assessing the utility of frailty scores in triage: a comparative study of validated scales

Currently, there is conflicting evidence regarding the efficacy of frailty scales and their ability to enhance or support triage operations. This study aimed to assess the utility of three common frailty scales (CFS, PRISMA-7, ISAR) and determine their utility in the triage setting. This prospective observational monocentric study was conducted at Merano Hospital's Emergency Department (ED) from June 1st to December 31st, 2023. All patients attending this ED during the 80-day study period were included, and frailty scores were correlated with three outcomes: hospitalization, 30-day mortality, and severity of condition as assessed by ED physicians. Patients were categorized by age, and analyses were performed for the entire study population, patients aged 18-64, and those aged 65 or older. Univariate analysis was followed by multivariable analysis to evaluate whether frailty scores were independently associated with the outcomes. In multivariable analysis, none of the frailty scores were found to be associated with the study outcomes, except for the CFS, which was associated with an increased risk of 30-day mortality, with an odds ratio of 1.752 (95% CI 1.148-2.674; p = 0.009) in the general population and 1.708 (95% CI 1.044-2.793; p = 0.033) in the population aged ≥ 65. Presently, available frailty scores do not appear to be useful in the triage context. Future research should consider developing new systems for accurate frailty assessment to support risk prediction in the triage assessment.