Fig. 1From: Combination therapies with thiazolidinediones are associated with a lower risk of acute exacerbations in new-onset COPD patients with advanced diabetic mellitus: a cohort-based case–control studyPatient selection process. AECOPD acute of exacerbations chronic obstructive pulmonary disease, CKD chronic kidney disease, COPD chronic obstructive pulmonary disease, DM diabetes mellitus, OADs oral antihyperglycemic drugs, T1DM type 1 diabetes mellitus, T2DM type 2 diabetes mellitusBack to article page