check.structure_post_frailty_var

The function controls that the structure of the 'Posterior Frailty Variances' coincides with the theoretical one.

internal

Fits time-dependent shared frailty Cox model (specifically the adapted Paik et al.'s Model) based on the paper "Centre-Effect on Survival After Bone Marrow Transplantation: Application of Time-Dependent Frailty Models", by C.M. Wintrebert, H. Putter, A.H. Zwinderman and J.C. van Houwelingen (2004) <doi:10.1002/bimj.200310051>.

Alessandra Ragni

TimeDepFrail

Time Dependent Shared Frailty Cox Model

Giulia Romani

Chiara Masci

check.structure_post_frailty_var function

<dl><dt>post_frailty_var</dt>
<dd>Posterior frailty variances S3 object of class 'PFV.AdPaik', composed of three elements:<ul>
<li>'alphaVar': posterior frailty variance for \(\alpha_j, \forall j\). It is a vector of length equal to the number of centres.</li>
<li>'epsVar': posterior frailty variance for \(\epsilon_{jk}, \forall j,k\). It is a matrix of dimension (n_centres, n_intervals).</li>
<li>'ZVar': posterior frailty variance for \(Z_{jk} = \alpha_j + \epsilon_{jk}, \forall j,k\). It is a matrix of dimension (n_centres, n_intervals)</li>
</ul></dd>
<dt>n_intervals</dt>
<dd>Number of intervals of the time-domain</dd>
<dt>n_centres</dt>
<dd>Number of centres/clusters.</dd></dl>

Arguments

Check Structure of Posterior Frailty Variances — check.structure_post_frailty_var

<dl>

<dt>post_frailty_var</dt>
<dd>Posterior frailty variances S3 object of class 'PFV.AdPaik', composed of three elements:<ul>
<li>'alphaVar': posterior frailty variance for \(\alpha_j, \forall j\). It is a vector of length equal to the number of centres.</li>
<li>'epsVar': posterior frailty variance for \(\epsilon_{jk}, \forall j,k\). It is a matrix of dimension (n_centres, n_intervals).</li>
<li>'ZVar': posterior frailty variance for \(Z_{jk} = \alpha_j + \epsilon_{jk}, \forall j,k\). It is a matrix of dimension (n_centres, n_intervals)</li>
</ul></dd>


<dt>n_intervals</dt>
<dd>Number of intervals of the time-domain</dd>


<dt>n_centres</dt>
<dd>Number of centres/clusters.</dd>

</dl>

check.structure_post_frailty_var: Check Structure of Posterior Frailty Variances

Description

Usage

Value

Arguments