nonlinear piecewise regression/intervention analysis

[PaigeMiller]

This is now the third time you are asking this question. Please do not create new threads to re-ask your question. There was plenty of advice in your previous thread. https://communities.sas.com/t5/Statistical-Procedures/nonlinear-piecewise-regression/m-p/635142

[Ksharp]

This may give you some clue.
https://documentation.sas.com/?docsetId=etsug&docsetVersion=14.3&docsetTarget=etsug_arima_examples06...

And this :

https://documentation.sas.com/?docsetId=etsug&docsetVersion=14.3&docsetTarget=etsug_arima_examples04...

[esraa1]

@Ksharp  thank you