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Rising patient demand in emergency departments is an international problem. Patient dependency (the degree of nursing care required) has major implications for nursing. Nurse skill mix and staffing levels can be addressed more effectively when dependency can be measured. A valid and reliable method of determining patient dependency in the emergency department in the United Kingdom is required.

To test the validity, reliability and generalisability of the Jones Dependency Tool.

Six emergency departments across England were included. The sample was 140 adult patients from each site (n=840). Information was collected by nurses on: demographics, triage, chief complaint, vital clinical signs, nurse’s own subjective rating of patient dependency, Jones Dependency Tool ratings and a comparative tool ratings. For a sub-sample of 40 patients, observation data were collected …