Latent Profile Analysis in SAS

[QZ3]

Hi, is there a way to do latent profile analysis using SAS? Thanks!

[PaigeMiller]

https://support.sas.com/kb/30/333.html

Latent AnalysisThis is a broad class of methods including Latent Trait Analysis (LTA), Latent Profile Analysis, Latent Class Analysis (LCA), and Latent Class Regression. LTA is also called Item Response Theory. One method is factor analysis of binary or ordinal data. For more information  latent analysis, see this website. See SAS Note 30623 regarding user-written procedures for LCA and LTA. These procedures are not supported by SAS Institute.

[QZ3]

Thank you PaigeMiller! Is there any specific resource for latent profile analysis? It would be wonderful to have access to SAS code if they are available. 

[PaigeMiller]

The links take you to specific resources for latent profile analysis.

[QZ3]

I only saw LCA and LTA codes, but not LPA. Am I missing something?

[PaigeMiller]

How about this, which talks about LPA being simply a version of LCA that is used with continuous response variables, and then walks you through the steps involved, which include factor analysis, which is in SAS in PROC FACTOR?

[QZ3]

Thank you so much! Just to clarify, are you suggesting that LPA in SAS is actually conducted by Proc Factor? 

[PaigeMiller]

PROC FACTOR is one step in the LPA process, as explained in the article.