sample size estimation for LGM

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howareu's picture
sample size estimation for LGM

if want to do latent growth curve modeling on 11 parameters with 4 data points. what is the minimum sample size needed for such analysis? how the sample size estimation should be done?

Sami Tuomivaara
Sami Tuomivaara's picture


Out of my insatiable curiosity, how you are going to fit eleven parameters to your dataset of four? First of all, four datapoints in any experiment where you want to have predictive curve is very low number, especially if you need more than two parameters (linear) to describe the system. Second, with eleven parameters, your system is very underdetermined...

In any case, sample size depends on the confidence level you want to have in your results...

Please share a bit more details...