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mice (version 2.30)

mice.impute.norm.boot: Imputation by linear regression, bootstrap method

Description

Imputes univariate missing data using linear regression with boostrap

Usage

mice.impute.norm.boot(y, ry, x, ridge = 1e-05, ...)

Arguments

y

Incomplete data vector of length n

ry

Vector of missing data pattern (FALSE=missing, TRUE=observed)

x

Matrix (n x p) of complete covariates.

ridge

Ridge parameter

...

Other named arguments.

Value

A vector of length nmis with imputations.

Details

Draws a bootstrap sample from x[ry,] and y[ry], calculates regression weights and imputes with normal residuals. The ridge parameter adds a penalty term ridge*diag(xtx) to the variance-covariance matrix xtx.

References

Van Buuren, S., Groothuis-Oudshoorn, K. (2011). mice: Multivariate Imputation by Chained Equations in R. Journal of Statistical Software, 45(3), 1-67. http://www.jstatsoft.org/v45/i03/