A Metaregression Analysis of the Dose-Response Effect of Aspirin on Stroke

Abstract
EXPERTS DISAGREE about the optimal aspirin dose in preventing stroke. Patrono and Roth1(p756) claim that "good clinical practice should dictate the use of the lowest dose of aspirin shown effective in the prevention of stroke and death in patients with ischemic cerebrovascular disease, i.e., 75 mg daily." Barnett et al2(p590) believe otherwise: "We postulate that the evidence is uncertain and available only from indirect comparisons but that it leans toward the moderate- to higher-dose regimens."