Dataset to examine if respiratory function in children
was influenced by smoking.

datasets

Utility package containing:
1) Facilities for working with grouped data: 'do' something to data
stratified 'by' some variables.
2) LSmeans (least-squares means), general linear estimates.
3) Restrict functions to a smaller domain.
4) Miscellaneous other utilities.

Søren Højsgaard

doBy

Groupwise Statistics, LSmeans, Linear Estimates, Utilities

fev function

A data frame with 654 observations on the following 5 variables.<dl>
<dt><code>Age</code></dt>
<dd>Age in years.</dd><dt><code>FEV</code></dt>
<dd>Forced expiratory volume in liters per second.</dd><dt><code>Ht</code></dt>
<dd>Height in centimeters.</dd><dt><code>Gender</code></dt>
<dd>Gender.</dd><dt><code>Smoke</code></dt>
<dd>Smoking status.</dd>
</dl>

Format

Forced expiratory volume in children — fev

A data frame with 654 observations on the following 5 variables.<dl>
<dt><code>Age</code></dt>
<dd>Age in years.</dd>

<dt><code>FEV</code></dt>
<dd>Forced expiratory volume in liters per second.</dd>

<dt><code>Ht</code></dt>
<dd>Height in centimeters.</dd>

<dt><code>Gender</code></dt>
<dd>Gender.</dd>

<dt><code>Smoke</code></dt>
<dd>Smoking status.</dd>


</dl>

fev: Forced expiratory volume in children

Description

Usage

Arguments

Format

References

Examples