Comparison of overall survival and healthcare resource utilization among patients with major depressive disorder with or without psychiatric emergency admission: A real-world study from Hungary

Background: Patients with major depressive disorder (MDD) hospitalized for psychiatric emergencies (PE) represent a high-risk population, requiring immediate intervention. Overall survival and healthcare resource utilization were evaluated among MDD patients with PE (MDD-PE) vs without PE (MDD-nonPE) using data from the Hungarian National Health Insurance Fund database (2009 to 2020).

Methods: Patients with MDD were selected if they had at least (i) 2 records of MDD diagnosis, or (ii) 1 record of MDD diagnosis and 1 prescription of antidepressant within 90 days of each other between 01 January 2010 and 31 December 2020. MDD-PE patients should have an inpatient hospitalization in a psychiatric ward dedicated for acute treatment, and/or a visit to an emergency department with ≥1 psychiatric and/or suicidal condition among the discharge diagnoses. Patients in the MDD-PE and MDD-nonPE cohorts were matched using a 1:1 propensity score matching algorithm based on age, gender, location of residence, and selected pre-index comorbidities.

Results: 28,988 MDD-PE and 28,988 MDD-nonPE patients were included after propensity score matching. Overall survival was significantly shorter among MDD-PE vs matched MDD-nonPE patients (HR: 1.40, 95%CI: 1.33-1.48; p < 0.001). MDD-PE (vs matched MDD-nonPE) patients had significantly higher mean all-cause inpatient admissions (3.9 vs 1.4, p < 0.001) per patient per year (PPPY), and MDD-related inpatient admissions (2.3 vs 0.7, p < 0.001) PPPY with more days in hospital PPPY (all-cause: 65.4 vs 17.4 days; MDD-related: 25.9 vs 8.7 days).

Conclusions: Findings emphasize the need for comprehensive care prioritizing increased vigilance for suicide risk and appropriate follow-up post-discharge among MDD-PE patients.