NBME 20 Neither procedure is superior (NBME Answers)

NBME 20 Answers ↦

nbme20/Block 1/Question#43 (43.8 difficulty score)
A randomized clinical trial is conducted to ...
Neither procedure is superior🔍,📺
tags:

Tutor box

Members from the Leaderboard offering 1-on-1 help:

drdoom / drdoom.tutoring@gmail.com 📩

Want to be listed here? Email us!

+11
submitted by strugglebus(165),

unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

hTe CI aevlu nictdeoan ,1 hihwc nasem atht sit gatcifisinnni

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! +

drdanielr Since the OR or RR is a ratio, if the two interventions are equal the ratio would be 1. So, if the CI includes 1, they are "the same" or not stat sig diff +

-7
submitted by xxabi(261),

unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

I khitn tis tath hte CI ictoedann eth nmuber "0" hicwh sakme ti ilasylisattct sniiafgiicntn

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 +3

conradfussurefake So am I the only one giving no shit about CI and going straight to what they're asking about. My understanding of the question is that they're asking about the difference in cosmetic results of both the procedure which are described in the stem as the same. The study isn't about wound infection rate!! +

fatboyslim @conradfussurefake In the beginning of the Q stem it states "A randomized clinical trial is conducted to compare WOUND HEALING and cosmetic differences...", hence wound infection will affect wound healing. But the because the CI contained the value of 1, it is insignificant. +1