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. 2016 Dec 9;11:3153–3161. doi: 10.2147/COPD.S113256

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© 2016 Avriel et al. This work is published and licensed by Dove Medical Press Limited

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(A) ROC curve for blood gas PaCO₂; (B) ROC curve for blood gas pH.

Notes: (A) Area under curve for PaCO₂ >45 mmHg was 0.68 (95% CI 0.53–0.82, P=0.02). (B) Area under curve for pH <7.36 was 0.7 (95% CI 0.56–0.84, P=0.0l). Arterial blood gases were drawn simultaneously with the cfDNA levels.

Abbreviations: PaCO₂, partial arterial pressure of carbon dioxide; ROC, receiver operating characteristic.