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Power Analysis w Monte Carlo Sim w 3+... |
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Hello Drs. Muthén, I'm running a power analysis for a 18 latent factor structure with 3 items per each factor (54 items total). I've built the Monte Carlo Simulation (correctly I believe) and gotten it to run without issue. My questions concerns how do I know if I have enough power. I've read Muthén & Muthén (2002) and the results that I've met the three criteria (parameter, SE, and coverage). However, I'm unsure how I would determine the power for this model. The Muthén & Muthén paper suggests I should look to column 7 (Sig Coef) as an indication of power. With the example given in the paper, I believe this means looking at the WITH statement (.812 in Appendix B) - But I'm not entirely sure about that. If this is the case, how would I determine power when there are multiple latent factors? I've pasted my the WITH statements below (ignore the set values, they are placeholders) f1 WITH f2-f18*.25; f2 WITH f3-f18*.25; f3 WITH f4-f18*.25; f4 WITH f5-f18*.25; f5 WITH f6-f18*.25; f6 WITH f7-f18*.25; f7 WITH f8-f18*.25; f8 WITH f9-f18*.25; f9 WITH f10-f18*.25; f10 WITH f11-f18*.25; f11 WITH f12-f18*.25; f12 WITH f13-f18*.25; f13 WITH f14-f18*.25; f14 WITH f15-f18*.25; f15 WITH f16-f18*.25; f16 WITH f17-f18*.25; f17 WITH f18*.25; |
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The power given in the %Sig column refers to a single parameter, not a set of parameters; it will be different for your different factor covariances. |
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Great! Thank you for your quick response :D |
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