Fig. 2From: Novel biomarker genes which distinguish between smokers and chronic obstructive pulmonary disease patients with machine learning approachSchematic diagram for identifying descriptive marker genes. The process for identifying descriptive marker genes for multi-classification and stepwise logistic regression analysis. Cig, cigarettes; CV, coefficient of variation; NI, normalized intensity value; NS, non-smokers; SMK, smokers; COPD, chronic obstructive pulmonary disease subjectsBack to article page