Scaling observed variables

[Lena Haag]

Dear lavaan group,

I scaled my variables by multiplications and divisions with 1000, 100, 10 to have the variances of variables in the same range (0-10). So, I converted each scale to have the same lower and upper levels. Could anybody provide a reference suggesting to prepare data like this to run the SEM?

Thanks in advance and best,

Lena

[Lena Haag]

So far I just found this: https://www.theanalysisfactor.com/rescaling-variables-to-be-same/

But maybe somebody knows about a paper that covers this topic?

[Victor Avasi]

Dear Lena,

There is a book that describes on page 89 what you are asking. 

Brown, T. A. (2015). Confirmatory factor analysis for applied research. Guilford publications.

The book is cited by many. Give it a shot.

Regards,

Victor

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[Brydon Grant]

Dear Lena,

I had a similar problem and standardized the variables using their interquartile range for a Cox model.  I had problems when I rescaled the variables with the JAMA statistical reviewer but it got accepted when I used this approach.  Nevertheless they made us show the results for both the standardized and unstandardized which demonstrated the utility of using interquartile range .  Here are the references that I used.

32. Milligan GW, Cooper MC. A study of standardization of variables in cluster analysis. J Classif. 1988;5(2):181-204. doi:10.1007/BF01897163 

33. Harrell FE Jr. Regression Modeling Strategies: With Applications to Linear Models, Logistic and Ordinal Regression, and Survival Analysis. Springer; 2015. doi:10.1007/978-3-319-19425-7 3

Hope that helps.  With kind regards, Brydon.

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[Lena Haag]

Thank you Brydon and Victor!

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