Journal of affective disorders · 2016
Major depressive disorder with subthreshold hypomanic (mixed) features: A real-world assessment of treatment patterns and economic burden.
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McIntyre Roger S, Ng-Mak Daisy, Chuang Chien-Chia, Halpern Rachel, Patel Pankaj A, Rajagopalan Krithika, Loebel Antony
Аннотация
BACKGROUND: To compare outcomes for individuals with major depressive disorder (MDD) with or without subthreshold hypomania (mixed features) in naturalistic settings.
METHODS: Using the Optum Research Database (1/1/2009─10/31/2014), a retrospective analysis of individuals newly diagnosed with MDD was conducted. Continuous enrollment for 12-months before and after the initial MDD diagnosis was required. MDD with subthreshold hypomania (mixed features) (MDD-MF) was defined based on ≥1 hypomania diagnosis within 30 days after an MDD diagnosis during the one-year follow-up period, in the absence of bipolar I diagnoses. Psychiatric medication use, healthcare utilization, and costs during the one-year follow-up period were compared using multivariate logistic and gamma regressions, controlling for baseline differences.
RESULTS: Of 130,626 MDD individuals, 652 (0.5%) met the operational definition of MDD-MF. Compared to the MDD-only group, the MDD-MF group had more suicidality (2.0% vs. 0.5%), anxiety disorders (46.8% vs. 34.0%), and substance use disorders (15.5% vs. 6.1%, all P<0.001). More individuals with MDD-MF were treated with antidepressants (83.6% vs. 71.6%), mood stabilizers (50.5% vs. 2.7%), atypical antipsychotics (39.0% vs. 5.5%), and polypharmacy with multiple drug classes (72.1% vs. 22.7%, all P<0.001). Individuals with MDD-MF had higher hospitalizations rates (24.2% vs. 10.5%) and total healthcare costs (mean: $15,660 vs. $10,744, all P<0.001).
LIMITATIONS: The commercial claims data used were not collected for research purposes and may over- or under-represent certain populations. No specific claims-based diagnostic code for MDD with mixed features exists.
CONCLUSIONS: Greater use of mood stabilizers, atypical antipsychotics, polypharmacy, and healthcare resources provides evidence of the complexity and severity of MDD-MF. Identifying optimal treatment regimens for this population represents a major unmet medical need.
METHODS: Using the Optum Research Database (1/1/2009─10/31/2014), a retrospective analysis of individuals newly diagnosed with MDD was conducted. Continuous enrollment for 12-months before and after the initial MDD diagnosis was required. MDD with subthreshold hypomania (mixed features) (MDD-MF) was defined based on ≥1 hypomania diagnosis within 30 days after an MDD diagnosis during the one-year follow-up period, in the absence of bipolar I diagnoses. Psychiatric medication use, healthcare utilization, and costs during the one-year follow-up period were compared using multivariate logistic and gamma regressions, controlling for baseline differences.
RESULTS: Of 130,626 MDD individuals, 652 (0.5%) met the operational definition of MDD-MF. Compared to the MDD-only group, the MDD-MF group had more suicidality (2.0% vs. 0.5%), anxiety disorders (46.8% vs. 34.0%), and substance use disorders (15.5% vs. 6.1%, all P<0.001). More individuals with MDD-MF were treated with antidepressants (83.6% vs. 71.6%), mood stabilizers (50.5% vs. 2.7%), atypical antipsychotics (39.0% vs. 5.5%), and polypharmacy with multiple drug classes (72.1% vs. 22.7%, all P<0.001). Individuals with MDD-MF had higher hospitalizations rates (24.2% vs. 10.5%) and total healthcare costs (mean: $15,660 vs. $10,744, all P<0.001).
LIMITATIONS: The commercial claims data used were not collected for research purposes and may over- or under-represent certain populations. No specific claims-based diagnostic code for MDD with mixed features exists.
CONCLUSIONS: Greater use of mood stabilizers, atypical antipsychotics, polypharmacy, and healthcare resources provides evidence of the complexity and severity of MDD-MF. Identifying optimal treatment regimens for this population represents a major unmet medical need.