PCA in imputed data set

[Tahmina Begum]

Hi there,

I intend to use PCA in generating metabolic score in multiple imputed data set.However, I am confused how to get proportion of variance onwards.

mi estimate, cmdok saving(miest_pca,replace): pca Z2SBP Z2WC Z2Glucose Z2HDL Z2TG , vce(normal) comp(2)blanks(.3)

mi predictnl pc1= predict(score) using miest_pca
mi predictnl pc2= predict(score) using miest_pca

mi xeq :gen PCAScore_WC=pc1 +pc2

( I would like to multiply two PCs with corresponding proportion of variance but do not know how to get this)

Thanks