Most, if not all regression procedure accept statement OUTPUT for creating a new dataset with predicted values and residuals. Thus if you add a statement like OUTPUT out=myPredData predicted=myPred; you will get a new dataset named myPredData similar to your input dataset but with an extra column named myPred which you can use as input to another regression. PG ... View more

If you have access to the SAS/Econometrics and Time Series module, PROC MODEL should be able to fit this two-stage instrumental variable nonlinear model. ... View more