USMLE* Confounding versus Effect Modification Revisited

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new video on the topic
*USMLE is a registered trade mark of its respective holder. I am in no way affiliated with it.
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Thank you! after watching this video, i had an exact question on the real exam and i got it right! your rock!

zho
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This is a more thorough explanation than your last video..both great nonetheless! Another great example is the relationship between oral contraceptive use and DVT with FH or smoking as effect modifiers.

bronxbomma