Biostatistics & Research · single question

What is MOST important when studying the EFFICACY of a new drug?

  1. Open-label design
  2. Large sample size only
  3. Placebo control group
  4. Industry sponsorship
Show answer and explanation

Correct answer: C. Placebo control group

PLACEBO control is essential for efficacy — isolates pharmacological effect from placebo effect, natural disease progression, and confounders. Ideally combined with double-blinding and randomization.

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