asthma

This dataset was used by Littell (2002) to demonstrate repeated measures analyses. The effect of two asthma drugs and a placebo were measured on 24 asthmatic patients. Each patient was randomly given each drug using an approach to minimize carry-over effects. Forced expiratory volume (FEV1), the volume of air that can be expired after taking a deep breath in one second, was measured. FEV1 was measured hourly for eight hours following application of the drug. A baseline measure of FEV1 was also taken 11 hours before application of the treatment.

datasets

Contains functions from: Aho, K. (2014) Foundational and Applied Statistics for Biologists using R.  CRC/Taylor and Francis, Boca Raton, FL, ISBN: 978-1-4398-7338-0.

Ken Aho

asbio

A Collection of Statistical Tools for Biologists

asthma function

The dataframe has 11 columns:<dl>
 <dt><code>PATIENT</code></dt>
<dd>The subjects (there were 24 patients).</dd> <dt><code>BASEFEV1</code></dt>
<dd>A numerical variable; the baseline forced expiratory volume.</dd>
 
 <dt><code>FEV11H</code></dt>
<dd>Forced expiratory volume at 11 hours.</dd> <dt><code>FEV12H</code></dt>
<dd>Forced expiratory volume at 12 hours.</dd> <dt><code>FEV13H</code></dt>
<dd>Forced expiratory volume at 13 hours.</dd> <dt><code>FEV14H</code></dt>
<dd>Forced expiratory volume at 14 hours.</dd> <dt><code>FEV15H</code></dt>
<dd>Forced expiratory volume at 15 hours.</dd> <dt><code>FEV16H</code></dt>
<dd>Forced expiratory volume at 16 hours.</dd> <dt><code>FEV17H</code></dt>
<dd>Forced expiratory volume at 17 hours.</dd> <dt><code>FEV18H</code></dt>
<dd>Forced expiratory volume at 18 hours.</dd> <dt><code>DRUG</code></dt>
<dd>A factor with three levels <code>"a"</code> = a standard drug treatment, <code>"c"</code> = the drug under development, and <code>"p"</code> = a placebo.</dd>
 	
 
</dl>

Format

Asthma repeated measures dataset from Littell et al. (2002) — asthma

The dataframe has 11 columns:<dl>
 <dt><code>PATIENT</code></dt>
<dd>The subjects (there were 24 patients).</dd>

 <dt><code>BASEFEV1</code></dt>
<dd>A numerical variable; the baseline forced expiratory volume.</dd>
 
 <dt><code>FEV11H</code></dt>
<dd>Forced expiratory volume at 11 hours.</dd>

 <dt><code>FEV12H</code></dt>
<dd>Forced expiratory volume at 12 hours.</dd>

 <dt><code>FEV13H</code></dt>
<dd>Forced expiratory volume at 13 hours.</dd>

 <dt><code>FEV14H</code></dt>
<dd>Forced expiratory volume at 14 hours.</dd>

 <dt><code>FEV15H</code></dt>
<dd>Forced expiratory volume at 15 hours.</dd>

 <dt><code>FEV16H</code></dt>
<dd>Forced expiratory volume at 16 hours.</dd>

 <dt><code>FEV17H</code></dt>
<dd>Forced expiratory volume at 17 hours.</dd>

 <dt><code>FEV18H</code></dt>
<dd>Forced expiratory volume at 18 hours.</dd>

 <dt><code>DRUG</code></dt>
<dd>A factor with three levels <code>"a"</code> = a standard drug treatment, <code>"c"</code> = the drug under development, and <code>"p"</code> = a placebo.</dd>
 	
 
</dl>

asthma: Asthma repeated measures dataset from Littell et al. (2002)

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