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Fig. 2 | Respiratory Research

Fig. 2

From: Preserved ratio impaired spirometry is associated with small airway dysfunction and reduced total lung capacity

Fig. 2

Effect of PRISm on small airway dysfunction parameters expressed as odds ratio and 95% confidence intervals by fixed ratio-defined lung function categories. Abbreviations: PRISm, preserved ratio impaired spirometry; SAD, small airway dysfunction; OR, odds ratio; CI, confidence interval; GOLD, Global Initiative for Chronic Obstructive Lung Disease; IOS, Impulse oscillometry; CT, computed tomography; LAA-856, low-attenuation area of the lung with attenuation values below -856 Hounsfield units. Analyses were adjusted for age, sex, body mass index, smoking status, and smoking index. P value is a result of comparison with the healthy control group.

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