Bethany Lee posted on Monday, October 09, 2006 - 3:08 pm
We are conducting a 2-group CFA with a 13-item ordered categorical measure.
We are using WLSMV estimation since response options are positively skewed for at least one group (I had thought from the Flora & Curran, 2005 article that WLSMV was most appropriate for categorical data with floor or ceiling effects, although a post on this site suggested WLS or ML).
We have received the following error message:
*** ERROR > Group 2 does not contain all values of categorical variable
It seems that the range for one group of respondents is different than the other group, but can the multi-group CFA still be conducted?
You have two options. You can use maximum likelihood estimation and special features of the CATEGORICAL option which allow a different number of categories in each group. See the user's guide for details. Or you can collapse categories and use weighted least squares.