dataCog

The dataCog contains 1200 individuals with one line per visit. Repeated measures of global cognition (cognition) were collected over a maximum period of 30 years. Information on the age at death is also provided (ageDeath, ageDeath90).

Estimation of relatively complex nonlinear mixed-effects models, including the Sigmoidal Mixed Model and the Piecewise Linear Mixed Model with abrupt or smooth transition, through a single intuitive line of code and with automated generation of starting values.

Maude Wagner

nlive

Automated Estimation of Sigmoidal and Piecewise Linear Mixed
Models

Ana W. Capuano

Emmanuelle Comets

dataCog function

A data frame with 11867 observations over 1200 subjects and 5 variables:<dl>
<dt>ID</dt>
<dd>subject identification number</dd><dt>time</dt>
<dd>the retrospective (negative) time before death (in years)</dd><dt>cognition</dt>
<dd>composite score of global cognition</dd><dt>ageDeath</dt>
<dd>age at death (in years)</dd><dt>ageDeath90</dt>
<dd>age at death centered by the mean</dd>
</dl>

Format

Made-up longitudinal data on global cognition before death — dataCog

A data frame with 11867 observations over 1200 subjects and 5 variables:<dl>
<dt>ID</dt>
<dd>subject identification number</dd>

<dt>time</dt>
<dd>the retrospective (negative) time before death (in years)</dd>

<dt>cognition</dt>
<dd>composite score of global cognition</dd>

<dt>ageDeath</dt>
<dd>age at death (in years)</dd>

<dt>ageDeath90</dt>
<dd>age at death centered by the mean</dd>


</dl>

dataCog: Made-up longitudinal data on global cognition before death

Description

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Examples