Learn in a minute - Odds Ratio

In this video I will use about 1 minute to teach you about Odds Ratio in the easiest way for you to understand.
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[@rickeiaselmon2051]

Beautifully explained and very simple! Thank you!

[@maryclare4528]

Very helpful

[@thepharmacistacademy]

You're welcome :)

[@racimeexe9868]

Concise content , nice 🎉

[@thepharmacistacademy]

Thank you

[@whitneyamankwah9743]

super helpful

[@user-ne3cd3ti2l]

excellent

[@emocow4248]

amazing, thanks!

[@thepharmacistacademy]

You’re welcome

[@idkwhattonamemychannel4291]

thank you

[@thepharmacistacademy]

You're welcome

[@user-xi9cg2rt8t]

But why do we cross multiply them?

[@chizusakuraa]

that’s another way of solving odds ratio

[@fluffythepuppy08]

@@chizusakuraaidk if it’s really another way because you do get slightly different answers. And in a fill-in-the blank question, you’d get it wrong if you don’t cross multiply… but I’m still unsure why you need to cross multiply

[@nawmurr]

If we divide two fractions, we can swap one of the fractions around and multiply instead. In the video they're cutting corners a little. At 0:55 you see it best.
Odds that a case was exposed = Diseased people exposed÷Diseased people unexposed = A÷C
Odds that a control was exposed = not diseased exposed ÷ not diseased not exposed = B÷D
Odds rate = (A÷C) ÷ (B÷D) = AD÷BC