odds ratio

  1. S

    Odds ratio calculation

    Hey guys. I've been doing some work during the holidays and there's one thing I've been having trouble with. I'm doing a personal study comparing social survey answers between two different countries to make a comparative analysis on religions effect on education. To compare, I need to do...
  2. M

    95% confidence intervals and null hypothesis

    if a 95% confidence interval for a sample mean is (-1.23; 2.68). what would be tthe inferential decision made from a null hypothesis test when (i) Ho: mean(mu) + 2.0, and (ii) Ho: mean(mu) = -1.0 ? support each inference with a brief explanation for why you would make that decision. and...
  3. 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 +...
  4. 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...