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<dd><p>date(s), <ahref="https://rdrr.io/r/base/character.html"class="external-link">character</a> (vectors) will be coerced with <code><ahref="https://rdrr.io/r/base/as.POSIXlt.html"class="external-link">as.POSIXlt()</a></code></p></dd>
<dd><p>reference date(s) (default is today), <ahref="https://rdrr.io/r/base/character.html"class="external-link">character</a> (vectors) will be coerced with <code><ahref="https://rdrr.io/r/base/as.POSIXlt.html"class="external-link">as.POSIXlt()</a></code></p></dd>
<dd><p>a <ahref="https://rdrr.io/r/base/logical.html"class="external-link">logical</a> to indicate whether age calculation should be exact, i.e. with decimals. It divides the number of days of <ahref="https://en.wikipedia.org/wiki/Year-to-date"class="external-link">year-to-date</a> (YTD) of <code>x</code> by the number of days in the year of <code>reference</code> (either 365 or 366).</p></dd>
<dt>na.rm</dt>
<dd><p>a <ahref="https://rdrr.io/r/base/logical.html"class="external-link">logical</a> to indicate whether missing values should be removed</p></dd>
<dt>...</dt>
<dd><p>arguments passed on to <code><ahref="https://rdrr.io/r/base/as.POSIXlt.html"class="external-link">as.POSIXlt()</a></code>, such as <code>origin</code></p></dd>
<p>An <ahref="https://rdrr.io/r/base/integer.html"class="external-link">integer</a> (no decimals) if <code>exact = FALSE</code>, a <ahref="https://rdrr.io/r/base/double.html"class="external-link">double</a> (with decimals) otherwise</p>
<p>Ages below 0 will be returned as <code>NA</code> with a warning. Ages above 120 will only give a warning.</p>
<p>This function vectorises over both <code>x</code> and <code>reference</code>, meaning that either can have a length of 1 while the other argument has a larger length.</p>
<p></p><p><code>AMR</code> (for R). Free and open-source, licenced under the <atarget="_blank"href="https://github.com/msberends/AMR/blob/main/LICENSE"class="external-link">GNU General Public License version 2.0 (GPL-2)</a>.<br>Developed at the <atarget="_blank"href="https://www.rug.nl"class="external-link">University of Groningen</a> and <atarget="_blank"href="https://www.umcg.nl"class="external-link">University Medical Center Groningen</a> in The Netherlands.</p>
