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Development and preliminary validation of the Adult Asthma Adherence Questionnaire™
Michael Schatz1, Robert S Zeiger1, Su-Jau Yang2
1Department of Allergy, Kaiser Permanente Medical Center, San Diego and Los Angeles, Calif; Department of Research and Evaluation, Kaiser Permanente Medical Center, San Diego and Los Angeles, Calif.
The Journal of Allergy and Clinical Immunology. in Practice
|February 26, 2014
Summary
Identifying asthma medication nonadherence is crucial for better outcomes. This study developed a practical questionnaire with five key questions to pinpoint patient adherence risks and barriers, aiding clinical practice.
Area of Science:
- Pulmonary Medicine
- Clinical Pharmacy
- Health Services Research
Background:
- Asthma medication adherence significantly impacts patient outcomes.
- Current methods for identifying suboptimal adherence in clinical settings lack standardization.
Purpose of the Study:
- To develop a practical questionnaire for assessing nonadherence risk.
- To identify specific barriers contributing to medication nonadherence in asthma patients.
Main Methods:
- A 20-question survey was administered to 420 adult asthma patients.
- Statistical analysis identified questions related to self-reported adherence and prescription refill data.
- Reliability and validity were assessed using Cronbach's alpha and correlations with clinical outcomes.
Main Results:
- Five key adherence barriers were identified: medication plan adherence, forgetting, perceived need, side effects, and cost.
- Individual questions, not a composite score, are recommended due to low internal consistency.
- All identified barriers correlated with asthma control and future medication use.
Conclusions:
- A five-question tool effectively identifies patients at risk of asthma medication nonadherence.
- This questionnaire helps pinpoint specific barriers, enabling targeted clinical interventions.
- The findings support the clinical utility of a practical adherence assessment tool.
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