Fig. 3
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, spirometric, and CO diffusing capacity parameters. Only item 4 from CAT, mMRC, KCO %predicted and FEV1/FVC were selected as significant predictors. Please note the large differences in the distribution of diagnoses; nodes 8 and 9 were maximally informative (n = 160 patients), nodes 4, 5, 7 and 10 less informative (n = 276 patients). The odds ratio for emphysema corresponding to node 8 was 5.51