Stratifying asthma populations by medication use: how you count counts.

Area of Science:

• Pharmacoeconomics and Health Outcomes Research
• Respiratory Medicine
• Health Services Research

Background:

• Asthma management programs rely on pharmacy data for risk stratification.
• Accurate counting of prescribed asthma medications is crucial for identifying high-risk patients and suboptimal physician prescribing.
• Current methods may not fully capture medication use patterns.

Purpose of the Study:

• To compare simple dispensing counts versus a canister-equivalent method for quantifying asthma medication use.
• To evaluate differences in patient and physician risk profiles generated by each counting method.
• To assess the impact of different counting methodologies on asthma disease management strategies.

Main Methods:

• Retrospective cohort study within a group-model health maintenance organization.
• Analysis of medication use patterns in asthma patients.
• Evaluation of physician prescribing habits for asthma medications.

Main Results:

• The canister-equivalent method identified a 40% greater population with high bronchodilator and anti-inflammatory use compared to simple counts.
• Physician anti-inflammatory to bronchodilator ratios differed significantly between methods (1.50 vs. 1.08).
• 36% of physicians were reclassified into different quartiles of prescribing patterns based on the counting method used.

Conclusions:

• A novel canister-equivalent method provides a more accurate risk profile of asthma medication use than simple counts.
• Asthma disease management programs should consider adopting advanced methods for medication counting to enhance risk stratification.
• Improved accuracy in medication use assessment can lead to more effective patient outreach and physician intervention strategies.