Fig. 2
From: Prediction of lung emphysema in COPD by spirometry and clinical symptoms: results from COSYCONET
Decision tree derived from the inclusion of CAT, SGRQ, mMRC and FEV1/FVC. Only item 1 from CAT, mMRC and FEV1/FVC were selected as significant predictors. Please note the large differences in the distribution of diagnoses; nodes 2 and 6 were maximally informative (n = 278 patients), nodes 4 and 5 less informative (n = 158 patients). The odds ratio for emphysema corresponding to node 6 was 7.69