extend.formula

internal

Multiple imputation using Fully Conditional Specification (FCS)
implemented by the MICE algorithm as described in Van Buuren and
Groothuis-Oudshoorn (2011) <doi:10.18637/jss.v045.i03>. Each variable has
its own imputation model. Built-in imputation models are provided for
continuous data (predictive mean matching, normal), binary data (logistic
regression), unordered categorical data (polytomous logistic regression)
and ordered categorical data (proportional odds). MICE can also impute
continuous two-level data (normal model, pan, second-level variables).
Passive imputation can be used to maintain consistency between variables.
Various diagnostic plots are available to inspect the quality of the
imputations.

Stef van Buuren

mice

Multivariate Imputation by Chained Equations

Karin Groothuis-Oudshoorn

Gerko Vink

Rianne Schouten

Alexander Robitzsch

Patrick Rockenschaub

Lisa Doove

Shahab Jolani

Margarita Moreno-Betancur

Ian White

Philipp Gaffert

Florian Meinfelder

Bernie Gray

Vincent Arel-Bundock

Mingyang Cai

Thom Volker

Edoardo Costantini

Caspar van Lissa

Hanne Oberman

extend.formula function

<dl><dt>formula</dt>
<dd>A formula. If it is
not a formula, the formula is internally reset to <code>~0</code>.</dd>
<dt>predictors</dt>
<dd>A character vector of variable names.</dd>
<dt>auxiliary</dt>
<dd>A logical that indicates whether the variables
listed in <code>predictors</code> should be added to the formula as main
effects. The default is <code>TRUE</code>.</dd>
<dt>include.intercept</dt>
<dd>A logical that indicated whether the intercept
should be included in the result.</dd></dl>

Arguments

Extends a formula with predictors — extend.formula

<dl>

<dt>formula</dt>
<dd>A formula. If it is
not a formula, the formula is internally reset to <code>~0</code>.</dd>


<dt>predictors</dt>
<dd>A character vector of variable names.</dd>


<dt>auxiliary</dt>
<dd>A logical that indicates whether the variables
listed in <code>predictors</code> should be added to the formula as main
effects. The default is <code>TRUE</code>.</dd>


<dt>include.intercept</dt>
<dd>A logical that indicated whether the intercept
should be included in the result.</dd>

</dl>

Extends a formula with predictors

extend.formula: Extends a formula with predictors

Description

Usage

Value

Arguments