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<table width="100%" summary="page for wtloss {MASS}"><tr><td>wtloss {MASS}</td><td align="right">R Documentation</td></tr></table>
<h2>Weight Loss Data from an Obese Patient</h2>


<h3>Description</h3>

<p>
The data frame gives the weight, in kilograms, of an obese patient at 52
time points over an 8 month period of a weight rehabilitation programme.
</p>


<h3>Usage</h3>

<pre>
wtloss
</pre>


<h3>Format</h3>

<p>
This data frame contains the following columns:
<dl>
<dt><code>Days</code></dt><dd>Time in days since the start of the programme.
</dd>
<dt><code>Weight</code></dt><dd>Weight in kilograms of the patient.
</dd></dl>

<h3>Source</h3>

<p>
Dr T. Davies, Adelaide.
</p>


<h3>References</h3>

<p>
Venables, W. N. and Ripley, B. D. (2002)
<EM>Modern Applied Statistics with S.</EM> Fourth edition.  Springer.
</p>


<h3>Examples</h3>

<pre>
wtloss.fm &lt;- nls(Weight ~ b0 + b1*2^(-Days/th),
    data = wtloss, start = list(b0=90, b1=95, th=120),
    trace = TRUE)
</pre>



<hr><div align="center">[Package <em>MASS</em> version 7.2-44 <a href="00Index.html">Index]</a></div>

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