topic Re: linear and non linear combinations of previous estimated in Statistical Procedures

linear and non linear combinations of previous estimated

deleted_user — Sat, 08 Jan 2011 13:30:47 GMT

Does anyone know if there exists any function in SAS that resembles the
"lincom" and "nlcom" of STATA?. These functions computes point
estimates, standard errors, significance levels, confidence intervals,
etc. for linear and non linear combinations of previous estimated
parameters. Down here you've got links to descriptions of the functions of STATA
nlcom:
http://www.stata.com/help.cgi?nlcom
Lincom:
http://www.stata.com/help.cgi?lincom

Re: linear and non linear combinations of previous estimated

Dale — Tue, 11 Jan 2011 20:06:32 GMT

For linear combinations of parameters, you can use the PLM procedure available with SAS version 9.22. For nonlinear combinations of the parameters, I think you would have to construct IML code for your specific problem.

Re: linear and non linear combinations of previous estimated

StatDave — Wed, 26 Jan 2011 21:43:48 GMT

You could estimate nonlinear (or linear) combinations of parameters using the PREDICT statement in PROC NLMIXED if you fit the model in that procedure.

Re: linear and non linear combinations of previous estimated

BruceBrad — Fri, 03 May 2024 11:38:49 GMT

Having come across this old thread while researching the same question, I believe there is a solution. The NLEST macro https://support.sas.com/kb/58/775.html