The CONTRAST statements are meaningless since Drug is involved in interaction and so, by definition, its effect depends on the level of the interacting variable, Age.  Your ODDSRATIO statement for Drug gives you estimates of the odds ratios comparing Drug levels at the mean of Age.  If you want to make the Drug comparisons at a different level of Age, use the AT option in the ODDSRATIO statement. ... View more

Yes you can check for interaction between a continuous and categorical variable, though its slightly harder to interpret the results. ... View more