Figure 2.

 Veterans Health Administration patient utilization of antihypertensive medications by class and comorbidity (fiscal year 2006). Drug classes include angiotensin‐converting enzyme inhibitors (ACEI); β‐adrenergic blockers (BB); thiazide diuretics (Thiazide); calcium channel blockers (CCB); α₁‐adrenergic blockers (Alpha); loop plus other diuretics (Loop); angiotensin II receptor antagonists (ARB); and other (eg, clonidine, hydralazine, methyldopa, reserpine, and related medications). Comorbidities include diabetes mellitus (DM), n=564,895; ischemic heart disease (IHD), n=347,417; heart failure (HF), n=72,741; benign prostatic hyperplasia (BPH), n=207,204; and uncomplicated hypertension (uHTN), n=720,268.