| Monotherapy | N | % | Most frequently-prescribed drugs | 
      
        | Angiotensin-II receptor antagonists | 38 | 23.46 | Losartan    (13), Valsartan (8) | 
      
        | Calcium    channel blockers | 32 | 19.75 | Amlodipine    (15), Diltiazem (8) | 
      
        | β-Adrenergic    receptor    antagonists | 31 | 19.14 | Bisoprolol    (13), Atenolol (8) | 
      
        | Angiotensin-converting    enzyme inhibitors | 25 | 15.43 | Enalapril    (15) | 
      
        | Diuretics | 19 | 12.96 | Loop    diuretics: Furosemide (6), Torsemide (5); Thiazides:    Indapamide (5)
 | 
      
        | Other    categories: Vasodilators, α-Adrenergic    antagonists, Mixed adrenergic antagonists, Centrally-acting drugs | 15 | 9.26 | Vasodilators:    Minidoxil (1); α-Adrenergic antagonists: Doxazosinmesylate    (7);
 Mixed adrenergic    antagonists: Carvedilol (4);
 | 
      
        | Drug Combinations | N | % | Most frequently-prescribed drugs | 
      
        | Angiotensin-II    receptor antagonists + Diuretics | 29 | 61.70 | Combinations    with Hydrochlorothiazide: Valsartan +    Hydrochlorothiazide (9);
 Irbesartan    + Hydrochlorothiazide (6)
 | 
      
        | Angiotensin-converting    enzyme inhibitors + Diuretics | 7 | 14.89 | Enalapril +    Hydrochlorothiazide (4) | 
      
        | Diuretic    combinations | 5 | 10.64 | Amiloride +    Hydrochlorothiazide (4) | 
      
        | Calcium    channel blockers + Angiotensin-II receptor antagonists | 2 | 4.26 |  | 
      
        | β-Adrenergic    receptor    antagonists + Diuretics | 2 | 4.26 |  | 
      
        | Calcium    channel blockers +Statins | 1 | 2.13 |  | 
      
        | Calcium    channel blockers + β-Adrenergic receptor    antagonists | 1 | 2.13 |  |