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NBME 20 Answers

nbme20/Block 1/Question#43

A randomized clinical trial is conducted to compare ...

Neither procedure is superior

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The CI value contained 1, which means that its insignificant

sympathetikey  Correct. Per first aid: "If the 95% CI for odds ratio or relative risk includes 1, H0 is not rejected." +1  
xxabi  Ah that makes more sense, thanks! +  




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submitted by xxabi(98),

I think its that the CI contained the number "0" which makes it statistically insignificant

kernicterusthefrog  You're thinking about CI for a **mean difference** b/w 2 variables. This question talks about **relative risk**, for which 'strugglebus' correctly asserts that *a CI including 1 fails to reject the null hypothesis*. #funwithformatting +  
xxabi  Ahhhh you're right, I definitely had them mixed up! Thanks! +1  
xxabi  #biostatsisthebaneofmyexistence +1