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Mplus Discussion > Exploratory Factor Analysis >
 Henk van Stel posted on Monday, February 06, 2017 - 8:02 am
dear dr. Múthen,
I'm trying to do an EFA on data from 450 patients who completed a survey on patient safety. The .dat file includes all 450 cases; the few missings have been coded as 888888. When I run a simple EFA using Mplus 6.1, only half of the cases are used (n=225). Rebuilding the .dat file did not solve the issue. What can cause this problem?

with regards,
Henk van Stel
 Linda K. Muthen posted on Monday, February 06, 2017 - 8:17 am
This happens when you have more variable names on the NAMES list than you have columns in the data set. These two numbers should be the same.
 Henk van Stel posted on Tuesday, February 07, 2017 - 5:25 am
Thanks for the quick reply. Checking my database revealed that I accidentally included a non-numeric variable, which resulted in a missing column.
 Bengt O. Muthen posted on Wednesday, February 08, 2017 - 3:53 pm
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