SD: standard deviation; COPD: chronic obstructive pulmonary disease; NYHA: New York Heart Association; SBP: systolic blood pressure; DBP: diastolic blood pressure; ARBs: Angiotensin II receptor blockers; ACE: Angiotensin converting enzyme

Table 1 (cont.) Baseline characteristics of the study population and comparison of the characteristics of the patients based on whether they had anemia or not.