Hi,
I am using panel data for my study. I want to use principal component analysis (PCA). As a read few article related to it, I come to know that the PCA will be a effective only when the nature of the variable is interval or ratio. Since the variable I am using in my analysis are categorical variable (ordered and dichotomous variable both). So using PCA will be not efficient in that scenario. After I go through with some literature, I come to know about categorical principal component analysis or nonlinear PCA. I does not get more information related to categorical principal component analysis in STATA. Kindly guide me further how to perform categorical principal component analysis in STATA or there is any other method I can use for my analysis??
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