Key result
Early readmission risk index predicts 30-day psychiatric readmissions with ~0.76 AUC.
Why the study?
Early hospital readmission in mental health inpatients negatively affects outcomes and increases healthcare costs, making early risk identification crucial.
Case-Control (n=196)
No
A newly developed 30-day readmission risk index demonstrated good predictive performance for identifying mental health inpatients at risk of early hospital readmission.
Answers are grounded in this paper and cite their sources.
Supports psychiatric readmission risk tools; leaves open need for external validation before clinical use.
Early hospital readmission in mental health inpatients negatively affects patient outcomes and increases healthcare costs, making early risk identification crucial. This study aimed to develop a 30-day readmission risk index using a retrospective case-control design in the Mental Health Hospitalization Unit of the Hospital Regional Universitario de Málaga, including 196 admission episodes (98 early readmissions and 98 controls). Univariate and multivariate logistic regression analyses identified the following predictive variables: previous hospital admissions, presence of a personality disorder, high social risk, having used emergency services in the past year, having a legal capacity restriction, aggressive behavior at admission, and marital status. The resulting index demonstrated good predictive performance (AUC = 0.764), with internal validation showing an optimism-corrected AUC of 0.727 and acceptable calibration (slope = 0.796, intercept = -0.023). This tool may be useful for risk stratification and post-discharge planning, but should be used cautiously due to the exploratory nature of the study. Clinical trial registration: ClinicalTrials.gov, identifier NCT06604780.
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García-Illanes et al. (2026) conducted a case-control in Mental health disorders (n=196). Early Readmission Risk Index was evaluated on Predictive performance (Area Under the Curve) for 30-day early readmission. The early readmission risk index demonstrated good predictive performance for identifying 30-day psychiatric readmission risk, achieving an area under the curve of 0.764.
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