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Impact of a targeted asthma intervention program on treatment costs in patients with asthma
1College of Pharmacy, Rutgers University, 160 Frelinghuysen Rd, Piscataway, NJ 08854, USA. dsuh@rci.rutgers.edu
Objective:
To evaluate the impact of a targeted asthma intervention on treatment costs, utilization of medical services, number of prescription drugs filled, and trends of medication use from a third-party perspective.
Study Design:
Longitudinal population-based study.
Methods:
Study asthmatic patients were classified into intermittent and persistent asthma groups according to the Health Plan Employer Data and Information Set (HEDIS) 2000 asthma measurement. The intervention instituted appropriate asthma drug therapy according to National Heart, Lung, and Blood Institute guidelines. A paired t test and analysis of covariance were used to compare treatment costs and the number of prescriptions dispensed in the 9 months before and the 9 months after the intervention.
Results:
The study patients (n = 1616) included 566 with intermittent asthma and 1050 with persistent asthma. After the intervention, treatment costs per patient increased significantly by $122 in the intermittent asthma group (P = .001) but decreased significantly by $247 in the persistent asthma group (P < .001). Costs incurred by patients with persistent asthma decreased by $149 for hospitalization (P = .003), $16 for emergency room visits (P < .001), $82 for physician visits (P < .001), and increased by $1 for asthma medications (P = .938). The number of asthma medication prescriptions per patient increased by 0.72 prescriptions in the intermittent asthma group (P < .001), whereas the persistent asthma group had a per patient reduction of 0.99 prescriptions (P < .001).
Conclusion:
A targeted asthma intervention resulted in decreased hospitalization, emergency room, and physician visit costs in patients with persistent asthma.