topic proc mixed with baseline age centered. Do I need add baseline age to all follow up visits? in SAS Programming

proc mixed with baseline age centered. Do I need add baseline age to all follow up visits?

PSZ — Wed, 28 Nov 2018 21:10:55 GMT

If I want to adjusted my model by baseline age, do I need to add baseline age to all the follow up visits?

For example,

person visit group Age bloodpressure

1 baseline a baseline age 100

2 baseline b baseline age 101

1 visit1 a baseline age or visit1 age? 101

2 visit1 b baseline age or visit1 age? 102

Thank you very much!

rbikes — Mon, 10 Dec 2018 18:31:26 GMT

Yes, you would need to have a column that just has baseline age per person.

PSZ — Mon, 07 Jan 2019 22:34:31 GMT

Thank you very much!