|
|
LTA with 2 covariates and interaction... |
|
Message/Author |
|
Anya Hart posted on Sunday, September 08, 2019 - 1:49 am
|
|
|
I am wondering what is the best way to have 2 covariates and the interaction between them in an LTA. Has anyone tried this? Right now, I am thinking about transforming one of my covariates into a binary variable so that I can use the KNOWNCLASS option on top of example 8.14 like this: CLASSES = cg (2) c1 (3) c2 (3); KNOWNCLASS = cg (g = 0 g = 1); MODEL: %OVERALL% c1 c2 ON cg; MODEL cg: %cg#1% c2 ON c1; c1 ON x; %cg#2% c2 ON c1; c1 ON x; MODEL c1: %c1#1% c2 ON x; [u11$1] (1); [u12$1] (2); [u13$1] (3); [u14$1] (4); [u15$1] (5); %c1#2% c2 ON x; [u11$1] (6); [u12$1] (7); ~ [u15$1] (15); MODEL c2: %c2#1% [u21$1] (1); [u22$1] (2); [u23$1] (3); [u24$1] (4); [u25$1] (5); %c2#2% [u21$1] (6); [u22$1] (7); [u23$1] (8); ~ [u25$1] (15); |
|
|
Why not simply use Define: x12 = x1*x2; and use x12 instead of x in your setup (so no cg). |
|
Back to top |
|
|