Table 1.

Studies comparing adherence rates of different antihypertensive drugs

Studya	n	Outcome (persistence)	AT-II blockers	ACE-inhibitors	Calcium antagonists	Beta-blockers	Diuretics
Blooms 1998	21,723	1-year persistence	64%	58%	50%	43%	38%
Caro 1999	22,918	4.5-year persistence	neb	53%	47%	49%	40%
Morgan 2004	82,824	1-year persistence	56%	56%	52%	54%	49%
Polluzzi 2005	6,043	3-year persistence*	52%	43%	39%	47%	23%
Simons 2008	48,690	33-month persistence	84%	84%	72%	ne	ne

^aAll theses studies are retrospective.

^bnot evaluated.