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We investigated whether the combination of increased exhaled nitric oxide fraction (
) level and blood eosinophil count had an additive value in chronic airway disease in the general population.We included 4677 individuals aged 20-100 years from the Copenhagen General Population Study. Based on pre- and post-bronchodilator spirometry, self-reported asthma and smoking history, participants were subdivided into healthy never-smokers (n=1649), healthy ever-smokers (n=1581), asthma (n=449), chronic obstructive pulmonary disease (COPD) (n=404), asthma-COPD overlap (ACO) (n=138) and nonspecific airflow limitation (n=456).Compared to individuals with
<25 ppb and blood eosinophils <0.3×10
cells·L
, age- and sex-adjusted odds ratios (95% CI) for wheezing were 1.54 (1.29-1.84) for individuals with
≥25 ppb or blood eosinophils ≥0.3×10
cells·L
and 2.14 (1.47-3.10) for individuals with
≥25 ppb and blood eosinophils ≥0.3×10
cells·L
Corresponding odds ratios were 1.13 (0.91-1.41) and 1.83 (1.20-2.79) for sputum production, 1.54 (1.22-1.94) and 3.26 (2.16-4.94) for asthma, 1.03 (0.80-1.32) and 0.67 (0.36-1.27) for COPD and 1.32 (0.88-1.96) and 2.14 (1.05-4.36) for ACO. Among individuals reporting respiratory symptoms, predicting the type of chronic airway disease did not differ between the two biomarkers and did not improve by combining them.Combination of
and blood eosinophils may have an additive value in characterising chronic airway disease in the general population but still needs to be investigated further with regard to clinical application.
Sprache
Englisch
Identifikatoren
ISSN: 0903-1936
eISSN: 1399-3003
DOI: 10.1183/13993003.00616-2018
Titel-ID: cdi_proquest_miscellaneous_2056397188
Format
–
Weiterführende Literatur
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