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Fig. 3 | Respiratory Research

Fig. 3

From: COPD profiles and treatable traits using minimal resources: identification, decision tree and stability over time

Fig. 3

Decision tree to assign people with chronic obstructive pulmonary disease (COPD) to the identified profiles (1, 2, 3 and 4). Cut-off points were 18 for the COPD Assessment Test (CAT), 65 years for age and 48% of predicted for the forced expiratory volume in 1 s (FEV1). Pie charts represent the proportion of people with COPD correctly assigned to each profile using the decision tree (using the actual profile provided in Fig. 2 as the criterion)

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