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Risk of hospitalizations/emergency department visits and treatment costs associated with initial maintenance therapy using fluticasone propionate 500 microg/salmeterol 50 microg compared with ipratropium for chronic obstructive pulmonary disease in older adults.
Am J Geriatr Pharmacother. 2008 Aug; 6(3):138-46.AJ

Abstract

BACKGROUND

Cost-effective treatments for chronic obstructive pulmonary disease (COPD) are needed to reduce the burden on the Medicare system.

OBJECTIVES

The objectives of this retrospective study were to compare the effects of fluticasone propionate 500 microg/salmeterol 50 microg (FSC 500/50) with those of ipratropium (IPR) in older adult patients with COPD on the following factors: (1) the risk of all-cause and COPD-related hospitalization and emergency department (ED) visits; and (2) all-cause and COPD-related treatment costs.

METHODS

This retrospective, observational cohort study assessed commercially insured patients aged > or =65 years (Medicare eligible) with COPD-related medical costs (International Classification of Diseases, Ninth Revision, Clinical Modification codes 490.xx, 491.xx, 492.xx, or 496.xx), 18 months of continuous enrollment (12 months' pre-study and 6 months' poststudy), and > or =1 prescription claim (ie, the index event) for FSC 500/50 or IPR between January 2, 2001, and August 12, 2003. Exacerbation events (hospitalizations/ED visits) were assessed using Cox proportional hazards regression models controlling for baseline factors and preindex events. Treatment costs were estimated using multivariate generalized linear models to adjust for baseline characteristics and preindex utilization and costs. A propensity-matched comparison was conducted as a sensitivity analysis.

RESULTS

A total of 1051 patients (540 women, 511 men) were identified: 952 in the IPR group (mean age, 74.26 years) and 99 in the FSC 500/50 group (mean age, 72.38 years). Treatment with FSC 500/50 was not associated with a reduction in the risk of all-cause hospitalization or ED visit compared with IPR (adjusted hazards ratio [HR], 0.913 [95% CI, 0.673-1.238]); however, FSC 500/50 was associated with a significantly lower risk (45%) of a COPD-related event (adjusted HR, 0.547 [95% CI, 0.301-0.995]). Although treatment with FSC 500/50 was associated with significantly lower annual mean all-cause medical costs compared with IPR ($18,642 vs $25,556, P < 0.05), the use of FSC 500/50 was also associated with significantly higher annual all-cause pharmacy costs ($2813 vs $2244, P < 0.05). Compared with the IPR cohort, the FSC 500/50 cohort had lower mean annual COPD-related medical costs (-$464 [P = NS]) and higher COPD-related pharmacy costs ($260 [P < 0.01]). However, increased pharmacy costs may be compensated for by decreased medical costs in both all-cause and COPD-related services. Results from the sensitivity analysis with the propensity score-matched sample of 194 patients were similar.

CONCLUSIONS

Compared with the IPR cohort, the FSC 500/50 cohort was 45% less likely to have a COPD-related exacerbation event and had similar medical costs. FSC 500/50 was a more effective initial maintenance therapy than IPR for this Medicare population, and, despite the $260 increase in COPD-related pharmacy costs, there was no significant difference in COPD-related medical costs.

Authors+Show Affiliations

Center for Pharmacoeconomic and Outcomes Research, Lovelace Respiratory Research Institute, Albuquerque, New Mexico 87108, USA. cblanchette@LRRI.orgNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18775388

Citation

Blanchette, Christopher M., et al. "Risk of Hospitalizations/emergency Department Visits and Treatment Costs Associated With Initial Maintenance Therapy Using Fluticasone Propionate 500 Microg/salmeterol 50 Microg Compared With Ipratropium for Chronic Obstructive Pulmonary Disease in Older Adults." The American Journal of Geriatric Pharmacotherapy, vol. 6, no. 3, 2008, pp. 138-46.
Blanchette CM, Akazawa M, Dalal A, et al. Risk of hospitalizations/emergency department visits and treatment costs associated with initial maintenance therapy using fluticasone propionate 500 microg/salmeterol 50 microg compared with ipratropium for chronic obstructive pulmonary disease in older adults. Am J Geriatr Pharmacother. 2008;6(3):138-46.
Blanchette, C. M., Akazawa, M., Dalal, A., & Simoni-Wastila, L. (2008). Risk of hospitalizations/emergency department visits and treatment costs associated with initial maintenance therapy using fluticasone propionate 500 microg/salmeterol 50 microg compared with ipratropium for chronic obstructive pulmonary disease in older adults. The American Journal of Geriatric Pharmacotherapy, 6(3), 138-46. https://doi.org/10.1016/j.amjopharm.2008.08.005
Blanchette CM, et al. Risk of Hospitalizations/emergency Department Visits and Treatment Costs Associated With Initial Maintenance Therapy Using Fluticasone Propionate 500 Microg/salmeterol 50 Microg Compared With Ipratropium for Chronic Obstructive Pulmonary Disease in Older Adults. Am J Geriatr Pharmacother. 2008;6(3):138-46. PubMed PMID: 18775388.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Risk of hospitalizations/emergency department visits and treatment costs associated with initial maintenance therapy using fluticasone propionate 500 microg/salmeterol 50 microg compared with ipratropium for chronic obstructive pulmonary disease in older adults. AU - Blanchette,Christopher M, AU - Akazawa,Manabu, AU - Dalal,Anand, AU - Simoni-Wastila,Linda, PY - 2008/07/21/accepted PY - 2008/9/9/pubmed PY - 2008/10/24/medline PY - 2008/9/9/entrez SP - 138 EP - 46 JF - The American journal of geriatric pharmacotherapy JO - Am J Geriatr Pharmacother VL - 6 IS - 3 N2 - BACKGROUND: Cost-effective treatments for chronic obstructive pulmonary disease (COPD) are needed to reduce the burden on the Medicare system. OBJECTIVES: The objectives of this retrospective study were to compare the effects of fluticasone propionate 500 microg/salmeterol 50 microg (FSC 500/50) with those of ipratropium (IPR) in older adult patients with COPD on the following factors: (1) the risk of all-cause and COPD-related hospitalization and emergency department (ED) visits; and (2) all-cause and COPD-related treatment costs. METHODS: This retrospective, observational cohort study assessed commercially insured patients aged > or =65 years (Medicare eligible) with COPD-related medical costs (International Classification of Diseases, Ninth Revision, Clinical Modification codes 490.xx, 491.xx, 492.xx, or 496.xx), 18 months of continuous enrollment (12 months' pre-study and 6 months' poststudy), and > or =1 prescription claim (ie, the index event) for FSC 500/50 or IPR between January 2, 2001, and August 12, 2003. Exacerbation events (hospitalizations/ED visits) were assessed using Cox proportional hazards regression models controlling for baseline factors and preindex events. Treatment costs were estimated using multivariate generalized linear models to adjust for baseline characteristics and preindex utilization and costs. A propensity-matched comparison was conducted as a sensitivity analysis. RESULTS: A total of 1051 patients (540 women, 511 men) were identified: 952 in the IPR group (mean age, 74.26 years) and 99 in the FSC 500/50 group (mean age, 72.38 years). Treatment with FSC 500/50 was not associated with a reduction in the risk of all-cause hospitalization or ED visit compared with IPR (adjusted hazards ratio [HR], 0.913 [95% CI, 0.673-1.238]); however, FSC 500/50 was associated with a significantly lower risk (45%) of a COPD-related event (adjusted HR, 0.547 [95% CI, 0.301-0.995]). Although treatment with FSC 500/50 was associated with significantly lower annual mean all-cause medical costs compared with IPR ($18,642 vs $25,556, P < 0.05), the use of FSC 500/50 was also associated with significantly higher annual all-cause pharmacy costs ($2813 vs $2244, P < 0.05). Compared with the IPR cohort, the FSC 500/50 cohort had lower mean annual COPD-related medical costs (-$464 [P = NS]) and higher COPD-related pharmacy costs ($260 [P < 0.01]). However, increased pharmacy costs may be compensated for by decreased medical costs in both all-cause and COPD-related services. Results from the sensitivity analysis with the propensity score-matched sample of 194 patients were similar. CONCLUSIONS: Compared with the IPR cohort, the FSC 500/50 cohort was 45% less likely to have a COPD-related exacerbation event and had similar medical costs. FSC 500/50 was a more effective initial maintenance therapy than IPR for this Medicare population, and, despite the $260 increase in COPD-related pharmacy costs, there was no significant difference in COPD-related medical costs. SN - 1543-5946 UR - https://www.unboundmedicine.com/medline/citation/18775388/Risk_of_hospitalizations/emergency_department_visits_and_treatment_costs_associated_with_initial_maintenance_therapy_using_fluticasone_propionate_500_microg/salmeterol_50_microg_compared_with_ipratropium_for_chronic_obstructive_pulmonary_disease_in_older_adults_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1543-5946(08)00044-5 DB - PRIME DP - Unbound Medicine ER -