Journal of medical economics · 2011
US hospital database analysis of invasive aspergillosis in the chronic obstructive pulmonary disease non-traditional host.
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Patel Dipen A, Gao Xin, Stephens Jennifer M, Forshag Mark S, Tarallo Miriam
Аннотация
OBJECTIVES: Invasive aspergillosis (IA) is reported increasingly in non-traditional hosts, typically patients with chronic obstructive pulmonary disease (COPD). Objectives were to describe the excess burden of IA in COPD, including mortality, resource utilization, and costs, as well as to examine the impact of initial antifungal selection on clinical and economic outcomes.
METHODS: This retrospective cohort study used national data from 2005 to 2008, from the Premier Perspective hospital database. IA was identified using proxy ICD-9 codes based on published algorithms. The COPD + IA patient cohort was analyzed using descriptive statistics. Excess resource utilization was analyzed by matching cases (COPD + IA) and controls (COPD patients without aspergillosis) on demographic and clinical variables. Multivariate analyses were used to assess the impact of initial antifungal drug selection on outcomes in COPD + IA.
RESULTS: In total, 475 COPD + IA patients were identified (mean age 69 years, 50% male, 76% Caucasian). COPD + IA cases had significantly higher costs, length of stay, intensive care unit (ICU) stay, and mortality compared to COPD controls (all p < 0.01). On average, antifungal therapy was initiated on hospital day 6, with mean length of therapy 15 days, and one-third of patients were in the ICU when antifungal treatment was initiated. Most commonly used antifungals were voriconazole, fluconazole, and caspofungin. Patients receiving fluconazole as the initial antifungal, an agent inactive against moulds, had almost two times greater mortality (p = 0.016), two additional hospital days (p = 0.002), and 25% greater costs (p = 0.007), compared to patients receiving voriconazole first-line. Findings were consistent in sub-analyses including ICU patients.
LIMITATIONS: 'Invasive' form of aspergillosis was identified using proxy ICD-9 codes based on published literature. Additional limitations stem from the study's non-randomized, retrospective design that is typical with any database analyses.
CONCLUSIONS: COPD + IA patients had significantly higher mortality, resource utilization, and costs versus COPD controls. Treatment with an agent active against Aspergillus was associated with better survival and reduced economic burden, therefore this potential etiology of pneumonia should be considered when contemplating antifungal therapy in COPD patients.
METHODS: This retrospective cohort study used national data from 2005 to 2008, from the Premier Perspective hospital database. IA was identified using proxy ICD-9 codes based on published algorithms. The COPD + IA patient cohort was analyzed using descriptive statistics. Excess resource utilization was analyzed by matching cases (COPD + IA) and controls (COPD patients without aspergillosis) on demographic and clinical variables. Multivariate analyses were used to assess the impact of initial antifungal drug selection on outcomes in COPD + IA.
RESULTS: In total, 475 COPD + IA patients were identified (mean age 69 years, 50% male, 76% Caucasian). COPD + IA cases had significantly higher costs, length of stay, intensive care unit (ICU) stay, and mortality compared to COPD controls (all p < 0.01). On average, antifungal therapy was initiated on hospital day 6, with mean length of therapy 15 days, and one-third of patients were in the ICU when antifungal treatment was initiated. Most commonly used antifungals were voriconazole, fluconazole, and caspofungin. Patients receiving fluconazole as the initial antifungal, an agent inactive against moulds, had almost two times greater mortality (p = 0.016), two additional hospital days (p = 0.002), and 25% greater costs (p = 0.007), compared to patients receiving voriconazole first-line. Findings were consistent in sub-analyses including ICU patients.
LIMITATIONS: 'Invasive' form of aspergillosis was identified using proxy ICD-9 codes based on published literature. Additional limitations stem from the study's non-randomized, retrospective design that is typical with any database analyses.
CONCLUSIONS: COPD + IA patients had significantly higher mortality, resource utilization, and costs versus COPD controls. Treatment with an agent active against Aspergillus was associated with better survival and reduced economic burden, therefore this potential etiology of pneumonia should be considered when contemplating antifungal therapy in COPD patients.