CRP and chronic kidney disease: IQR: Interquartile range; CAD: Coronary artery disease; COPD: Chronic obstructive pulmonary disease; ESRD: End-stage renal disease; NSAID: Non-steroidal anti-inflammatory drugs; ACE-I: Angiotensin converting enzyme inhibitor; WBC: White blood count; CRP: C-reactive protein; LDH: Lactate dehydrogenase; Hgb: Hemoglobin; SE: Standard error