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    <h1>Class 'rsi'</h1>
    
    <div class="hidden name"><code>as.rsi.Rd</code></div>
    </div>

    <div class="ref-description">
    
    <p>This transforms a vector to a new class <code>rsi</code>, which is an ordered factor with levels <code>S &lt; I &lt; R</code>. Invalid antimicrobial interpretations will be translated as <code>NA</code> with a warning.</p>
    
    </div>

    <pre class="usage"><span class='fu'>as.rsi</span>(<span class='no'>x</span>)

<span class='fu'>is.rsi</span>(<span class='no'>x</span>)

<span class='fu'>is.rsi.eligible</span>(<span class='no'>x</span>)</pre>
    
    <h2 class="hasAnchor" id="arguments"><a class="anchor" href="#arguments"></a>Arguments</h2>
    <table class="ref-arguments">
    <colgroup><col class="name" /><col class="desc" /></colgroup>
    <tr>
      <th>x</th>
      <td><p>vector</p></td>
    </tr>
    </table>
    
    <h2 class="hasAnchor" id="value"><a class="anchor" href="#value"></a>Value</h2>

    <p>Ordered factor with new class <code>rsi</code></p>
    
    <h2 class="hasAnchor" id="details"><a class="anchor" href="#details"></a>Details</h2>

    <p>The function <code>is.rsi.eligible</code> returns <code>TRUE</code> when a columns contains only valid antimicrobial interpretations (S and/or I and/or R), and <code>FALSE</code> otherwise.</p>
    
    <h2 class="hasAnchor" id="see-also"><a class="anchor" href="#see-also"></a>See also</h2>

    <div class='dont-index'><p><code><a href='as.mic.html'>as.mic</a></code></p></div>
    

    <h2 class="hasAnchor" id="examples"><a class="anchor" href="#examples"></a>Examples</h2>
    <pre class="examples"><span class='co'># NOT RUN {</span>
<span class='no'>rsi_data</span> <span class='kw'>&lt;-</span> <span class='fu'>as.rsi</span>(<span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/c'>c</a></span>(<span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/rep'>rep</a></span>(<span class='st'>"S"</span>, <span class='fl'>474</span>), <span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/rep'>rep</a></span>(<span class='st'>"I"</span>, <span class='fl'>36</span>), <span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/rep'>rep</a></span>(<span class='st'>"R"</span>, <span class='fl'>370</span>)))
<span class='no'>rsi_data</span> <span class='kw'>&lt;-</span> <span class='fu'>as.rsi</span>(<span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/c'>c</a></span>(<span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/rep'>rep</a></span>(<span class='st'>"S"</span>, <span class='fl'>474</span>), <span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/rep'>rep</a></span>(<span class='st'>"I"</span>, <span class='fl'>36</span>), <span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/rep'>rep</a></span>(<span class='st'>"R"</span>, <span class='fl'>370</span>), <span class='st'>"A"</span>, <span class='st'>"B"</span>, <span class='st'>"C"</span>))
<span class='fu'>is.rsi</span>(<span class='no'>rsi_data</span>)

<span class='co'># this can also coerce combined MIC/RSI values:</span>
<span class='fu'>as.rsi</span>(<span class='st'>"&lt;= 0.002; S"</span>) <span class='co'># will return S</span>

<span class='fu'><a href='https://www.rdocumentation.org/packages/graphics/topics/plot'>plot</a></span>(<span class='no'>rsi_data</span>)    <span class='co'># for percentages</span>
<span class='fu'><a href='https://www.rdocumentation.org/packages/graphics/topics/barplot'>barplot</a></span>(<span class='no'>rsi_data</span>) <span class='co'># for frequencies</span>
<span class='fu'><a href='freq.html'>freq</a></span>(<span class='no'>rsi_data</span>)    <span class='co'># frequency table with informative header</span>

<span class='co'># using dplyr's mutate</span>
<span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/library'>library</a></span>(<span class='no'>dplyr</span>)
<span class='no'>septic_patients</span> <span class='kw'>%&gt;%</span>
  <span class='fu'><a href='http://dplyr.tidyverse.org/reference/summarise_all.html'>mutate_at</a></span>(<span class='fu'><a href='http://dplyr.tidyverse.org/reference/vars.html'>vars</a></span>(<span class='no'>peni</span>:<span class='no'>rifa</span>), <span class='no'>as.rsi</span>)

<span class='co'># fastest way to transform all columns with already valid AB results to class `rsi`:</span>
<span class='no'>septic_patients</span> <span class='kw'>%&gt;%</span>
  <span class='fu'><a href='http://dplyr.tidyverse.org/reference/summarise_all.html'>mutate_if</a></span>(<span class='no'>is.rsi.eligible</span>,
            <span class='no'>as.rsi</span>)
<span class='co'># }</span></pre>
  </div>
  <div class="col-md-3 hidden-xs hidden-sm" id="sidebar">
    <h2>Contents</h2>
    <ul class="nav nav-pills nav-stacked">
      <li><a href="#arguments">Arguments</a></li>
      
      <li><a href="#value">Value</a></li>

      <li><a href="#details">Details</a></li>

      <li><a href="#see-also">See also</a></li>
      
      <li><a href="#examples">Examples</a></li>
    </ul>

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