armd

Data from Age-Related Macular Degeneration (ARMD)
 clinical trial

datasets

Datasets and utility  functions enhancing functionality of nlme package. Datasets, functions and scripts are described in book titled 'Linear Mixed-Effects Models:
A Step-by-Step Approach' by Galecki and Burzykowski (2013). Package is under development.

Andrzej Galecki

nlmeU

Datasets and Utility Functions Enhancing Functionality of 'nlme'
Package

armd function

The <code>armd</code> data frame has 867 rows and 8 columns. It contains
data for n=234 subjects stored in a long format with up to four rows for one
subject.
<dl>
 <dt>subject</dt>
<dd>a factor with 234 levels <code>1</code>, <code>2</code>, <code>3</code>, <code>4</code>, <code>6</code>, ..., <code>240</code></dd> <dt>treat.f</dt>
<dd>a factor with 2 levels <code>Placebo</code>, <code>Active</code></dd> <dt>visual0</dt>
<dd>an integer vector with values ranging from 20 to 85</dd> <dt>miss.pat</dt>
<dd>a factor with 8 levels <code>----</code>, <code>---X</code>, <code>--X-</code>, <code>--XX</code>, <code>-XX-</code>, ..., <code>X-XX</code></dd> <dt>time.f</dt>
<dd>a factor with 4 levels <code>4wks</code>, <code>12wks</code>, <code>24wks</code>, <code>52wks</code></dd> <dt>time</dt>
<dd>a numeric vector with values 4, 12, 24, 52</dd> <dt>visual</dt>
<dd>an integer vector with values ranging from 3 to 85</dd> <dt>tp</dt>
<dd>a numeric vector with values 1, 2, 3, 4 corresponding to time points 4, 12, 24, 52, respectively</dd></dl>

Format

armd Data (867 x 8) — armd

The <code>armd</code> data frame has 867 rows and 8 columns. It contains
data for n=234 subjects stored in a long format with up to four rows for one
subject.
<dl>
 <dt>subject</dt>
<dd>a factor with 234 levels <code>1</code>, <code>2</code>, <code>3</code>, <code>4</code>, <code>6</code>, ..., <code>240</code></dd>

 <dt>treat.f</dt>
<dd>a factor with 2 levels <code>Placebo</code>, <code>Active</code></dd>

 <dt>visual0</dt>
<dd>an integer vector with values ranging from 20 to 85</dd>

 <dt>miss.pat</dt>
<dd>a factor with 8 levels <code>----</code>, <code>---X</code>, <code>--X-</code>, <code>--XX</code>, <code>-XX-</code>, ..., <code>X-XX</code></dd>

 <dt>time.f</dt>
<dd>a factor with 4 levels <code>4wks</code>, <code>12wks</code>, <code>24wks</code>, <code>52wks</code></dd>

 <dt>time</dt>
<dd>a numeric vector with values 4, 12, 24, 52</dd>

 <dt>visual</dt>
<dd>an integer vector with values ranging from 3 to 85</dd>

 <dt>tp</dt>
<dd>a numeric vector with values 1, 2, 3, 4 corresponding to time points 4, 12, 24, 52, respectively</dd>

</dl>

armd: armd Data (867 x 8)

Description

Arguments

Format

Details

See Also

Examples