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Fig. 4 | BMC Pulmonary Medicine

Fig. 4

From: The association between transfer coefficient of the lung and the risk of exacerbation in asthma-COPD overlap: an observational cohort study

Fig. 4

The multivariable-adjusted hazard ratios for exacerbation according to the tertile of diffusion capacity or transfer coefficient of the lung. HR, hazard ratio. *P < 0.01 versus the reference group. With regard to diffusing capacity, the cut-off values for DLCO % pred are indicated as follows: highest, ≥ 108.73%; middle, 82.1–108.72%; and lowest, ≤ 82.0%. Similarly, the cut-offs for KCO % pred were ≥ 98.0% for the highest, 80.0–97.9% for the middle, and ≤ 79.9% for the lowest tertile group

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