Empty cell in bivariate table PreviousNext
Mplus Discussion > Confirmatory Factor Analysis >
 Abdel posted on Saturday, April 09, 2011 - 10:28 am
Hi all,

I have several warnings in the output of my multigroup CFA script that say:

WARNING: THE BIVARIATE TABLE OF *some dichotomous item* AND *some other dichotomous item* HAS AN EMPTY CELL.

At the end of these warnings, it says:


And the rest of the output, including the parameter estimates, look normal. Should I be worried?

Many thanks in advance!
 Linda K. Muthen posted on Saturday, April 09, 2011 - 4:20 pm
The issue is that an empty cell implies a correlation of one. When two variables correlate one, only one of them should be used in the analysis.
 Abdel posted on Saturday, April 09, 2011 - 5:48 pm
Thanks! This may be a silly question but: what if an empty cell occurs only in one or two of the many groups in a multigroup CFA? Would it still be okay to use both variables in the analysis or would that violate some assumption?
 Linda K. Muthen posted on Sunday, April 10, 2011 - 10:08 am
If you have empty cells for only some groups, then it is a problem for those groups. You might want to search for papers by Albert Maydeu who has studied this topic.
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