Hey everyone, At the moment I try to create a growth curve for anxiety over seven sequenced measure points. I would like to determine the slope factor as a linear function of the passed time. Besides the Intercept-parameter shall be explained through a few person-specific covariates (GE,SEB,ASK,FSSK,ERW,EXT,WI). Overall it shall become a multilevel analysis with longitudinal data. Since now I have written the following command:
title: Computing the growth curve data: file = DataforLWK.dat; variable: names = PA1,PA2,PA3,PA4,PA5,PA6,PA7,GE,SEB,ASK,FSSK,ERW,EXT,WI; missing = all (-99); model: interc linear | PA1@0PA2@1PA3@2PA4@3PA5@4PA6@5PA7@6; interc on GE,SEB,ASK,FSSK,ERW,EXT,WI; output: sampstat standardized stdyx; plot: type = plot3; series = PA1 (linear) PA2 (linear) PA3 (linear) PA4 (linear) PA5 (linear) PA6 (linear);
Iím confused by one thing: When I run the command and display the graphic "Sample & estimated means", the estimated means show a horizontal curve. But I thought that I made clear that the curve should gain linearly ("interc linear | PA1@0PA2@1PA3@2PA4@3PA5@4PA6@5PA7@6"). Can someone help me with that? Many thanks!