I am currently doing a project that requires some simple logistic regression analysis in SAS(version 9.1). For some reason my results seem to be the exact opposite of what I expected. For example, I have higher percentages of various illnesses in group1 in comparison to group2, but in my analysis group1 has odds ratios less than less than 1 for each illness analyzed. I checked and I am referencing the correct outcome variable in my analysis and my exposure variables are coded properly. I'm not sure what has gone wrong with my analysis. Anyone have any recommendations?