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Labeling variance of an oberved variable
Multilevel Data/Complex Sample
posted on Friday, October 24, 2008 - 11:15 am
Hello, I am trying to cacluate a effect size, but apparently I couldn't get it run. I think it's the labeling that I used caused the problem. Could you help out please? Thank you very much!
ZST37Q01 ON ZPVEPS(b1)
ES = b1*(2*sqrt(var1)/sqrt(var1*b1**2+Theta));
posted on Friday, October 24, 2008 - 11:29 am
Sorry, it's a labeling and typing mistake indeed. I have corrected it to be
ES1 = b1*(sqrt(var1)/sqrt(var1*b1**2+Theta)
But the estimate for ES1 is 0.476, whereas the STDYX standardization output is 0.529, and their t values are 17.190 and 13.814.
Could you advice me why is this please? Thanks!
Linda K. Muthen
posted on Friday, October 24, 2008 - 7:08 pm
I think your problem is that theta is a residual variance not a variance.
posted on Friday, October 24, 2008 - 7:17 pm
Oh i see. thank you. i forgot to add explained variances of the other two variables. i will take another try.
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