Beta, it's like checking only your biceps when your whole body needs to be strong! Primary endpoint is the main goal, like survival rate. Secondary are extra checks, like quality of life. Composite is a mix of outcomes, like heart attack or stroke combined. A trial can succeed on these but be meaningless if they pick a weak primary goal—like only reducing a minor symptom, not the real disease. I see this when gyms sell "six-pack in six weeks!" The measure is achieved, but the real health is still zero, theek hai na? Just like how lifting that sack looked right, but my back knew the truth!
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