4.4 Article

Evaluating construct validity of the Asthma Impairment and Risk Questionnaire using a 3-month exacerbation recall

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ANNALS OF ALLERGY ASTHMA & IMMUNOLOGY
卷 128, 期 5, 页码 544-+

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ELSEVIER SCIENCE INC
DOI: 10.1016/j.anai.2022.01.035

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  1. AstraZeneca
  2. AstraZeneca (Wilmington, Delaware)

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The study aimed to evaluate the construct validity of the Asthma Impairment and Risk Questionnaire (AIRQ). The results showed that the AIRQ classified asthma control similarly to the Asthma Control Test (ACT) and exacerbation validation standard, and exhibited construct validity with a 3-month recall period for exacerbation-based risk questions. Worsening AIRQ control levels were associated with higher proportions of exacerbations and greater asthma morbidity according to patient global self-assessments.
Background: Recurrent assessment of asthma control is essential to evaluating disease stability and intervention impacts. An assessment that can be administered between annual clinic visits is needed. The Asthma Impairment and Risk Questionnaire (AIRQ) is a cross-sectionally validated, 10-item, yes or no, composite control tool evaluating previous 2-week symptoms and previous 12-month exacerbations. Objective: To evaluate the construct validity of the AIRQ using a 3-month recall period for exacerbation-based risk questions and retaining the 2-week recall for symptom-based impairment items. Methods: At baseline, patients completed the AIRQ with 12-month recall exacerbation items, Asthma Control Test (ACT), St. George's Respiratory Questionnaire (SGRQ), and global self-assessments of asthma risk, control, and symptom severity. Patient-reported exacerbations were captured monthly. The AIRQ with 3-month recall exacerbation items, ACT, and global self-assessments was administered at months 3, 6, and 9, and SGRQ at month 6. Results: A total of 1112 patients aged 12 years or older were enrolled (mean [SD] age, 43.9 [19.5] years). The AIRQ and each administration of the AIRQ with 3-month recall exacerbation items classified asthma control similarly to an ACT plus exacerbation validation standard. For both AIRQ versions, SGRQ scores were higher with worsening asthma control (P<.001). At months 3, 6, and 9, worse AIRQ control levels were associated with higher proportions of patients with 1 or more and 2 or more exacerbations in the previous 3 months and patient global self-assessments indicating greater asthma morbidity (all P<.001). Conclusion: The AIRQ using exacerbation risk items with a 3-month recall period exhibits construct validity for classifying current asthma control and can be administered between annual AIRQ assessments. (C) 2022 American College of Allergy, Asthma & Immunology. Published by Elsevier Inc. All rights reserved.

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