Piecewise function on mlwin
Posted: Thu May 08, 2025 11:26 am
Hi all,
I am trying to fit a piecewise multilevel model on mlwin where there are four measurements taken during a treatment study. 3 measurements (baseline, mid-treatment and end of treatment) are taken during the treatment phase and one measurement during follow up. I am interested in assessing the effect of treatment (treatment group by time interaction) at the end of treatment and at follow-up. In this case, is it correct to specify the first time piece as 0, 0.5, 1, 1 and the second time piece as 0, 0, 0, 1?
Thanks a lot for your help.
I am trying to fit a piecewise multilevel model on mlwin where there are four measurements taken during a treatment study. 3 measurements (baseline, mid-treatment and end of treatment) are taken during the treatment phase and one measurement during follow up. I am interested in assessing the effect of treatment (treatment group by time interaction) at the end of treatment and at follow-up. In this case, is it correct to specify the first time piece as 0, 0.5, 1, 1 and the second time piece as 0, 0, 0, 1?
Thanks a lot for your help.