ACCP

ACCP Guidelines: Outcome Events in the CAPRIE Study

Based on the indirect comparison in the figures, the combination of extended-release dipyridamole and aspirin may be more effective than clopidogrel for prevention of stroke. The performance of antiplatelet drugs in separate trials varies because patient populations and protocols differ, and unrecognised biases may exist. No trial has performed a direct comparison between these alternative agents and physicians must make comparisons and clinical judgments based on the available data.