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35th AM (2025) - Poster Session
Psychiatric Readmissions and Dual Diagnosis A Data ...
Psychiatric Readmissions and Dual Diagnosis A Data-Driven Perspective
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This study analyzed inpatient behavioral health admissions using a large national dataset of over 32 million patients to investigate the impact of dual diagnosis—co-occurring substance use disorder (SUD) and another mental health disorder—on hospital readmissions and length of stay (LOS). The data from McGovern Medical School at UTHealth Houston comprised 66,016 inpatient admissions with an average of 3.10 admissions per patient and an average LOS of approximately 7.52 days.<br /><br />Among patients, 27.3% were diagnosed with depression, 23.7% with anxiety, and 23.5% with SUD. Regression analyses, controlling for diagnosis type, gender, race, age, and presence of additional diagnoses, showed that patients with co-occurring SUD had a 68% higher readmission rate compared to those with a single non-SUD diagnosis and 70% higher compared to SUD-only patients. These dual diagnosis patients also exhibited longer hospital stays than those with either diagnosis alone.<br /><br />Specific findings demonstrated that single diagnosis and SUD-only groups had significantly lower incident rate ratios for admission and LOS compared to the dual diagnosis group. Factors such as age and additional diagnoses also influenced outcomes. Race and gender showed varying associations with admissions and LOS, with some racial groups experiencing significantly different outcomes.<br /><br />The study concludes that addressing both SUD and non-SUD mental disorders together is crucial, as co-occurring disorders lead to more frequent readmissions and prolonged hospitalizations. While integrated outpatient care models have shown success in reducing emergency visits and admissions, further research is needed to evaluate whether similar integrated approaches in inpatient behavioral health settings could improve length of stay and readmission outcomes.<br /><br />Overall, the findings highlight the importance of tailored treatment plans and integrated care strategies to better manage patients with dual diagnoses, potentially reducing healthcare costs and improving patient outcomes.
Keywords
dual diagnosis
substance use disorder
mental health disorder
hospital readmissions
length of stay
behavioral health admissions
integrated care
inpatient admissions
regression analysis
healthcare outcomes
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