Care Needs for Patients Screened Positive for Cognitive Impairment and Delirium: A Cross-Sectional Observational Study.

The 4AT is a screening tool, not a diagnostic test, so some patients may have been misclassified, especially between delirium and other cognitive impairment. The study measured one day only, and delirium fluctuates, so it may have missed episodes that had resolved or partly resolved. The 4AT has limited validation in adults under 65 and in mental health settings, so those subgroup findings should be treated with caution. Care needs and risks came from existing nursing documentation based on clinical judgement, which may introduce bias, and missing documentation was common. In the main analysis missing care documentation was coded as no assistance or low risk, although sensitivity analyses with complete cases and recoding missing data as needing assistance gave similar results. It was a cross-sectional audit in one Australian health service, so it cannot show cause and effect or necessarily generalise to other settings. Auditors were trained but inter-rater reliability was not tested, and the models adjusted for a limited number of variables. Patients unable to communicate in English, including aphasia, were excluded, so findings do not cover all hospitalised adults.

The research received no specific grant from any funding agency, and the authors declared no conflicts of interest.

Do not read the higher care needs as proof that any intervention will reduce them. This was a one-day cross-sectional audit using a screening tool and nurse-documented needs, so it shows association, not cause or treatment effect.