odds ratio

  1. C

    Creating "score" --> by adding ORs?

    I have created a prognostic model using logistic regression. It predicts diabetes based on 6 independent variables (age, sex BMI, etc). I understand that Exp(Xi) = Odds Ratio of each (risk) factor in the model. I also understand that the probability of diabetes = exp(bo+ bi Xi) /((exp(bo +...
  2. L

    Odds Ratio and Hazard Ratio - HELP!

    I am trying to figure out how to calculate an estimated hazard ratio associated with a specific variable. I have the estimate and standard errors from SAS. I have a formula e^beta(Xa-Xb) for each individual. Just not sure what I should use for Xa and Xb. Also trying to calculate statistical...