A Large Randomized Double-Blinded Study Compares a New Inhalational Steroid

A large randomized double-blinded study compares a new inhalational steroid agent to fluticasone in patients with moderate persistent asthma.  The following results are highlighted in the study: The investigators conclude that the study drug is more effective in this patient population.  Which of the following is the major limitation of this conclusion?

A) Clinical significance
B) Lack of power
C) Lead-time bias
D) Surrogate endpoint
E) Type 1 error

Correct Answer:

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