Cardiovascular death has a well-established standard definition in clinical research and trials, commonly aligned with consensus guidelines from regulatory and scientific bodies.
The claim that cardiovascular death has a standardized clinical trial definition is a matter of widely accepted convention and consensus in cardiology and clinical trial methodology (often defined by organizations like the FDA or standardized criteria such as the Brighton Collaboration or standard trial endpoint definitions). Therefore, it falls under common knowledge and does not require a specific citation from the retrieved literature.