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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 |
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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. |
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Thanks for the quick reply. Checking my database revealed that I accidentally included a non-numeric variable, which resulted in a missing column. |
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ok. |
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