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saurabh1 TrackerSun, 08 Sep 2024 06:56:09 GMT2024-09-08T06:56:09ZLogistic regression - "unique profiles"
https://communities.sas.com/t5/Statistical-Procedures/Logistic-regression-quot-unique-profiles-quot/m-p/278662#M14709
<P>Hello,</P><P> </P><P>I am doing logistic regression in R on a binary dependent variable with only one independent variable. I found the odd ratio as 0.99 for an outcomes. This can be shown in following. Odds ratio is defined as, ratio_odds(H) = Probability(X=H) / (1-Probability(X=H)). As given earlier ratio_odds (H) = 0.99 which implies that the probability (X=H) = 0.497 which is close to 50% probability. This implies that the probability for having a H cases or non H cases 50% under the given condition of independent variable. This does not seem realistic from the data as only ~20% are found as H cases. Please give clarifications and proper explanations of this kind of cases in logistic regression.</P><P> </P><P>Thanks all for your help!</P>Mon, 20 Jun 2016 13:16:17 GMThttps://communities.sas.com/t5/Statistical-Procedures/Logistic-regression-quot-unique-profiles-quot/m-p/278662#M14709saurabh12016-06-20T13:16:17Z