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Practice questions › Population health and ethics › Treatment effects and NNT

Treatment effects and NNT

A practice question in the style of the AMC Part 1 MCQ exam. Choose your answer to see the explanation.

A mean difference in blood pressure is 3 mmHg, with a 95% CI of -2 to 8. What is the correct interpretation?

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The answer is E: Not statistically significant.

A CI for a difference that includes 0 is not significant.

This question comes from Week 24 of AM Vault: Evidence and epidemiology. That week has 156 more exam-style questions like it, 5 short lessons and 150 flashcards. The course starts free with Week 1 and reaches this topic in week 24, as part of a six-month plan with full mock exams along the way.

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