satdf

Function to compute empirical degrees of freedom
based on Bell and McCaffrey (2002).

Convenience functions and datasets to be used with Practical Multilevel Modeling using R. The package includes functions for calculating group means, group mean centered variables, and displaying some basic missing data information. A function for computing robust standard errors for linear mixed models based on Liang and Zeger (1986) <doi:10.1093/biomet/73.1.13> and Bell and 'McCaffrey' (2002) <https://www150.statcan.gc.ca/n1/en/pub/12-001-x/2002002/article/9058-eng.pdf?st=NxMjN1YZ> is included as well as a function for checking for level-one homoskedasticity (Raudenbush & Bryk, 2002, ISBN:076191904X).

Francis Huang

MLMusingR

Practical Multilevel Modeling

satdf function

<dl><dt>m1</dt>
<dd>The <code>lmerMod</code> or <code>lme</code> model object.</dd>
<dt>type</dt>
<dd>The type of cluster robust correction used (i.e., CR2 or none).</dd>
<dt>Vinv2</dt>
<dd>Inverse of the variance matrix.</dd>
<dt>Vm2</dt>
<dd>The variance matrix.</dd>
<dt>br2</dt>
<dd>The bread component.</dd>
<dt>Gname</dt>
<dd>The group (clustering variable) name'</dd></dl>

Arguments

Francis Huang, <a href="/link/huangf%40missouri.edu?package=MLMusingR&version=0.3.2" data-mini-rdoc="MLMusingR::huangf@missouri.edu">huangf@missouri.edu</a>
Bixi Zhang, <a href="/link/bixizhang%40missouri.edu?package=MLMusingR&version=0.3.2" data-mini-rdoc="MLMusingR::bixizhang@missouri.edu">bixizhang@missouri.edu</a>

Author

Compute Satterthwaite degrees of freedom — satdf

<dl>

<dt>m1</dt>
<dd>The <code>lmerMod</code> or <code>lme</code> model object.</dd>


<dt>type</dt>
<dd>The type of cluster robust correction used (i.e., CR2 or none).</dd>


<dt>Vinv2</dt>
<dd>Inverse of the variance matrix.</dd>


<dt>Vm2</dt>
<dd>The variance matrix.</dd>


<dt>br2</dt>
<dd>The bread component.</dd>


<dt>Gname</dt>
<dd>The group (clustering variable) name'</dd>

</dl>

Francis Huang, <a href='mailto:huangf@missouri.edu'>huangf@missouri.edu</a>
Bixi Zhang, <a href='mailto:bixizhang@missouri.edu'>bixizhang@missouri.edu</a>

satdf: Compute Satterthwaite degrees of freedom

Description

Usage

Arguments

Author