PROC LOGISTIC will also report the odds ratio for a unit increase in the continuous predictor.  To get the reciprocal of that odds ratio, you would have to model the other level of the binary response.  For example, if your response levels are coded 0 and 1 and you model the probability of 0: model y(event="0")=x; then modeling the probability of 1 will give an odds ratio that is the reciprocal of the above: model y(event="1")=x; ... View more