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#1




calculating adjusted odd's ratio?
Please can anyone explain how to calculate and analyze adjusted odds ratio?

#2




Adjusted Odds Ratio
Hi! Odds Ratio or Adjusted Odds Ratio? Adjusted Odds Ratio is supercomplicated, since it adjusts the OR for any number of confounding factors (like when you read in an article, "after adjusting for lifestyle, age, and previous history of cancer..."). Honestly, it is calculated by plugging the numbers into a computer program like SPSS! The important things to know about adjusted odds ratio are:
Interpreting adjusted OR is just like interpreting OR: if it's greater than one, the event is more likely to happen than not; if it's less than one, then the event is less likely to happen than not. Remember that the OR for the other outcome is the inverse, so if the OR is 4.0 for outcome X over notX, then the OR is 0.25 for outcome notX over X. Odds Ratio and Relative Risk are on p. 52 in FA 2011 (p. 54 in 2010). Hope that helps! 
The above post was thanked by:  
angel09 (08182011), dr z (01222011), drkaruppiaharun (01222011), Sabio (01222011), StepTaker (01212011) 
#3




tx.
thank you so much

#4




2x2 table formula
If you are analyzing risk data where exposed/unexposed is on the xaxis and cases/noncases are on the Yaxis (such that A=Exposed Cases, B=Unexposed Cases,C=Exposed NonCases, and D=Unexposed NonCases)
Crude RR=(A*(B+D))/B/(A+C) Crude Risk Difference=(A/(A+C))(B/(B+D)) 95% Confidence Interval= EXP(LN(Crude RR) [+ or ] 1.96*SQRT((((B+A)*(A+C)*(B+D))/((B+D)+(A+C))^2A*B/(A+B+C+D)) / ( (A*(B+D)/(A+B+C+D)) * (B*(A+C)/(A+B+C+D))))) Great FREE calculator for 2x2 study data if you have an iPhone/iPad/iPod Touch  it is an App called "iEpidemiology". You can find it in the App store here: http://itunes.apple.com/us/app/iepid...415595650?mt=8 I highly recommend it. 
#5




do they even ask for adjusted odds ratio on step 1.... i knw odds ratio but this adjusted OR scares me

#6




I am pretty sure they would never ask for adjusted odds ratio  just regular odds ratio. Anyone who has taken the boards want to weigh in?

#7




Wasn't even in Kaplan... i Doubt it..

#8




thank you... the simpler the study material... the better u perform...

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BiostatisticsEpidemiology 
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