TOPLINE: 

Frailty and vulnerability screening tools used in emergency departments (EDs) had high sensitivity but low specificity for predicting adverse outcomes among older adults, limiting their standalone clinical usefulness.

METHODOLOGY:

• Researchers conducted a systematic review and meta-analysis of 57 observational studies involving 125,412 adults aged 60 years or older (median age across studies, 80 years; 45%-69% women) to assess the accuracy of 39 frailty screening tools in predicting adverse outcomes among older adults following their ED visits.
• The frailty tools were either self-reported — most commonly the Identification of Seniors at Risk (ISAR) tool (26 studies) and the Triage Risk Screening Tool (TRST; 10 studies) — or based on clinician judgment — mostly the Clinical Frailty Scale (CFS; 20 studies). Each tool was tested in at least four studies.
• Outcomes included pooled sensitivity, specificity, area under the curve (AUC), and likelihood ratios of the tools in predicting adverse outcomes such as mortality, hospitalization, ED revisits, and rehospitalization.

TAKEAWAY:

• The ISAR tool showed high sensitivity (92%) but low specificity (37%) for predicting 30-day mortality, with limited predictive value (AUC, 0.84).
• The CFS with cutoff ≥ 5 showed balanced performance for predicting 30-day mortality (sensitivity, 81%; specificity, 71%; AUC, 0.82).
• The TRST demonstrated modest sensitivity, low specificity, and limited discriminatory ability (summary AUC, 0.63), with insufficient accuracy for predicting a 30-day ED revisit.
• Most screening tools showed limited accuracy in identifying patients at risk for an ED revisit or in predicting mortality, typically showing high sensitivity, low specificity, and poor discriminatory ability.

IN PRACTICE:

"Our findings suggest that EDs should reconsider relying on existing screening tools as standalone prognostic instruments and explore incorporating additional domains to improve accuracy," the authors wrote. "In summary, although existing instruments remain limited in their ability to accurately predict adverse outcomes, we recommend that health care professionals in the ED should continue to focus special attention on the unique needs of older ED patients — likely in an unstructured fashion — until instruments can be refined and improved," they added.

SOURCE:

The study was led by Nai-Wen Ku, MSN, University of Toronto, Toronto, Ontario, Canada. It was published online on August 2, 2025, in Annals of Emergency Medicine.

LIMITATIONS:

The review included only English and Chinese publications, possibly excluding relevant studies. Considerable variation in cutoffs, patient populations, and outcomes reduced comparability across studies. Many instruments were evaluated in single or small studies, limiting generalizability.

DISCLOSURES:

The study did not receive any specific funding, and the authors reported having no conflicts of interest.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.