Type II error — FRCA Primary MCQ
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Correct answer: D — Type II error from inadequate power
Type II error is a false negative, often due to inadequate power. 80% is less appropriate because it would fit a different clinical clue or a separate anaesthetic problem. Area under the ROC curve is less appropriate because it would fit a different clinical clue or a separate anaesthetic problem. Positive likelihood ratio substantially increases post-test probability is less appropriate because it would fit a different clinical clue or a separate anaesthetic problem. A plausible range for the true population effect is less appropriate because it would fit a different clinical clue or a separate anaesthetic problem. In Primary FRCA statistics, distinguish the question being asked from related but different measures of association or diagnostic accuracy.
Reference: RCoA Primary FRCA syllabus; Bland Medical Statistics; Primary FRCA textbooks