Predictive validity of the Triage Risk Screening Tool for elderly patients in a Canadian emergency department Jerome Fan MD, et al. - We sought to externally evaluate the predictive validity of the Triage Risk Screening Tool (TRST) for elderly patients in a Canadian setting...Conclusion: The TRST cannot be used as a single diagnostic test to predict whether Canadian ED elders will have an ED revisit, hospital admission, or long-term care placement at 30 or 120 days [more...]