KMID : 1225720200120040599
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Allergy, Asthma & Immunology Research : AAIR 2020 Volume.12 No. 4 p.599 ~ p.607
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Health-Related Utility of EQ-5D in Korean Adults With Chronic Urticaria: Mapping From Urticaria Outcome Measures
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Lee Min-Sang
Yoon Ji-Won Kim Ji-Woong Shin Yoo-Seob Park Hae-Sim Lee Hyun-Young Ye Young-Min
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Abstract
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Purpose: A need for useful measures reflective of the socio-economic burden of chronic urticaria (CU) has arisen. To obtain utility estimates for CU, we investigated EuroQol-5-Dimension (EQ-5D) indices according to urticaria control status and urticaria severity.
Methods: In this prospective observational study, we administered patient-oriented questionnaires on EQ-5D and urticaria outcomes, including Urticaria Activity Score over 7 days (UAS7), Urticaria Control Test (UCT), and CU-specific quality of life (CU-QOL). EQ-5D utility index scores were compared according to urticaria control status and disease severity. Conditional process analysis (CPA) was used to map EQ-5D utility scores from UAS7 and UCT.
Results: Greater EQ-5D utility values were obtained in patients with better urticaria control (0.91 ¡¾ 0.10 for well controlled CU, 0.84 ¡¾ 0.12 for partly controlled, 0.77 ¡¾ 0.14 for uncontrolled, P < 0.001). According to CU severity, mean utility values were ranged from 0.746 (severe, UAS7 ¡Ã 28) to 0.860 (moderate), 0.878 (mild), and 0.953 (urticaria free). CPA suggested that UAS7 was directly correlated with UCT (regression coefficient, ?0.251; 95% confidence interval [CI], ?0.278, ?0.223; P < 0.001) and EQ-5D utility (?0.002; 95% CI, ?0.003, ?0.001; P = 0.007) after controlling for age, sex, urticaria duration, and combined allergic diseases.
Conclusions: EQ-5D values increased with improvement in urticaria control and decreased with urticaria severity. A predictive model mapping EQ-5D utility from UAS7 and UCT scores suggested that EQ-5D can be useful for the pharmacoeconomic evaluation of individualized treatments for CU patients.
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KEYWORD
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Chronic urticaria, control, severity, symptoms, quality of life, EQ-5D, utility index
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