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- Jansson, Sven-Arne, et al.
(författare)
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Health care consumption and HRQOL in severe asthma in Sweden
- 2017
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Ingår i: Value in Health. - : ELSEVIER SCIENCE INC. - 1098-3015 .- 1524-4733. ; 20:9, s. A513-A513
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Objectives: Severe asthma is a disabling and costly disease, often poorly controlled despite high-dosage controller medications. The objectives of this analysis were to estimate health care consumption and to investigate health-related quality of life (HRQOL) in a severe asthma cohort, derived from a large-scale population survey in northern Sweden. Methods: Severe asthma was defined by US SARP criteria; high-dosage inhaled corticosteroids (ICS) by GINA 2014 criteria. In total, 32 patients with severe asthma were invited to a clinical examination and structured interview. Retrospective data of all asthma-related direct and indirect resource consumption during the last year were collected following a defined protocol. HRQOL was assessed by four patient-reported outcome measures: two general measures (SF-36; EQ-5D) and two disease-specific measures (SGRQ; ACT). The cohort was divided into two groups —patients with (OCS) or without maintenance oral corticosteroid (non-OCS) treatment. Results: Health care resource utilization was greater in the OCS-group compared with the non-OCS group. Mean annual number of visits to specialist care was 2.0 in the OCS group vs. 0.5 visits in the non-OCS group. Four patients in the OCS group had early retirement vs. none in the non-OCS group. HRQOL was worse in the OCS group, both when measured with general and disease-specific instruments. The Mental and Physical Component Summary scores of the SF-36 in the OCS vs. non-OCS group were 50.1 vs. 40.7 and 55.8 vs. 44.4, respectively. Similarly, the total SGRQ scores indicated worse HRQOL for the OCS-group compared with the non-OCS group (37.0 vs. 27.0). Conclusions: In this severe asthma population, patients treated with maintenance OCS consumed more health care resources, were more frequently early retired, and had worse HRQOL compared with those not receiving maintenance OCS. The results indicate a need for improved treatment for patients with severe asthma on maintenance OCS. Sponsor: AstraZeneca.
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- Myrberg, Tomi, et al.
(författare)
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Restrictive spirometry versus restrictive lung function using the GLI reference values
- 2022
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Ingår i: Clinical Physiology and Functional Imaging. - : Wiley. - 1475-0961 .- 1475-097X. ; 42:3, s. 181-189
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Tidskriftsartikel (refereegranskat)abstract
- Background: Restrictive lung function may indicate various underlying diseases. The aim of this study was to evaluate the accuracy of different restrictive spirometry patterns (RSPs) to identify restrictive lung function (total lung capacity [TLC] < lower limit of normal [LLN]) according to reference values by the Global Lung Function Initiative (GLI) in a wide age-ranged, general population sample. Methods: A general population sample (n = 607, age 23–72 years, smokers 18.8%) with proper dynamic spirometry and TLC measurements, was included. Accuracy of two main categories of RSP to identify TLC < LLN were evaluated: traditional RSPs (definition 1: FVC < 80% of predicted and FEV1/FVC ≥ 0.7 and definition 2: FVC < LLN and FEV1/FVC ≥ LLN) and RSPs defined by Youden's method (definition 3: FVC < 85.5% of predicted and FEV1/FVC ≥ LLN and definition 4: FVC Z-score < −1.0 and FEV1/FVC ≥ LLN). Results: The prevalence of restrictive lung function (TLC < LLN) was 5.3%. The most accurate cut-offs for FVC to identify TLC < LLN were 85.5% for FVC% of predicted, and −1.0 for FVC Z-score. The traditional RSP definitions 1 and 2 had higher specificity (95.0% and 96.9%) but substantially lower sensitivity compared to RSP definitions 3 and 4. Conclusion: Based on the GLI reference values, the RSP definition FVC < LLN and FEV1/FVC ≥ LLN yielded the highest specificity and may appropriately be used to rule out restrictive lung function. The RSP definition with the most favourable trade-off between sensitivity and specificity, FVC < 85.5% of predicted and FEV1/FVC ≥ LLN, may serve as an alternative with higher sensitivity for screening. © 2022 The Authors. Clinical Physiology and Functional Imaging published by John Wiley & Sons Ltd on behalf of Scandinavian Society of Clinical Physiology and Nuclear Medicine.
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