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Mplus Discussion > Growth Modeling of Longitudinal Data >
 Stella Summer posted on Thursday, March 22, 2012 - 6:29 am
Dear Linda,

I wonder if it makes sense to include additional variables in a LGC model when the slope turned out with a non-significant mean and variance ( i.e, no growth)?
Is it possible that these demographic variables would have an impact on the intercept and slope even though?

Thank you,
 Linda K. Muthen posted on Thursday, March 22, 2012 - 9:02 am
You can regress the growth factors on covariates even if the growth factor variances are not shown to be significantly different from zero. Adding the covariates may bring more power.
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