mice.impute.norm.predict(y, ry, x, ridge = 1e-05, ...)nFALSE=missing,
TRUE=observed)n x p) of complete covariates.nmis with imputations.ridge parameter adds a penalty term
ridge*diag(xtx) to the variance-covariance matrix xtx.mice:
Multivariate Imputation by Chained Equations in R. Journal of
Statistical Software, 45(3), 1-67.