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Friday 28 September 2007

Exploratory economic evaluation of patients with COPD on a combination product versus individual components (ipratropium bromide and albuterol).

By: York JM, Smeeding J, Brook RA, Hoehler F, Klein GL.

Adv Ther 2007 Jul-Aug;24(4):757-71

A population-based, retrospective claims analysis was undertaken to explore the economic profile of a nebulized ipratropium and albuterol combination product (DuoNeb(R) [DN], DEY, L.P., Napa, Calif). This analysis was performed to review expenditures and resource utilization of patients with chronic obstructive pulmonary disease (COPD) who were taking DN or generic ipratropium and albuterol (dual single agents [DSA]). Cohort selection criteria applied to the PharMetrics managed care claims database yielded 1531 patients: 468 DN and 1063 DSA. Total per-member-per-month (PMPM) expenditures were $1,840.36 for DN and $2,046.73 DSA (Delta$206.37; P=.22). Emergency department (ED) costs were $36.67 for DN and $52.84 for DSA (Delta$16.17; P=.03). Differences in regression analysis adjusted least squares means between DSA and DN were $264.62 (P=.083) for total expenditures and $20.81 (P=.03) for ED costs. Resource utilization reflected expenditure observations; ED visits were 0.93 for DN and 1.33 for DSA (P<.001). Inpatient expenditures (DN $874.97, DSA $1,105.80; Delta$230.83) represented the largest portion of total costs: 45% with DN and 54% with DSA. The DN cohort was associated with statistically fewer individuals who reported interruptions (0.78 vs 0.85; P=.003). The DN cohort did not appear to be more expensive than the DSA group, was associated with statistically lower ED expenditures, and included fewer individuals with therapy interruptions. Future analyses should include clinical data to better elucidate the full impact of DN on healthcare resources and compliance in the COPD population.

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