5M-EBM2011 Odd Ratios

Views:
 
Category: Education
     
 

Presentation Description

No description available.

Comments

Presentation Transcript

What are odds ratios?: 

What are odds ratios? Odds: Ratio of the probability that an event will happen to the probability that it won’t, or: Odds = P / (1 – P)

What are Odds ratios?: 

What are Odds ratios? A B C D Outcome Present Outcome Absent Exposed Not Exposed

What are Odds ratios?: 

What are Odds ratios? A B C D Outcome Present Outcome Absent Exposed Not Exposed Odds of the outcome in those exposed (A/B)

What are Odds ratios?: 

What are Odds ratios? A B C D Outcome Present Outcome Absent Exposed Not Exposed Odds of the outcome in those exposed (A/B) ______________ Odds of the outcome in those unexposed (C/D) = AD/BC

What are odds ratios?: 

What are odds ratios? Values greater than one indicate an increased risk of the outcome associated with the exposure Values less than one indicate a reduced risk of the outcome associated with the exposure Odds ratios are relative measures of association

PowerPoint Presentation: 

The End