"</code>, which will use a built-in reference set of
recentering means <a href="configuration.html#nhanes-reference-medians-1">derived from
NHANES</a>. Another option is to run <code><a href="../reference/cleangrowth.html">cleangrowth()</a></code> once on
your entire dataset to extract <code>sd.median</code> values for the
entire dataset as a whole using the <code>sdmedian.filename</code>
option. This would then create a recentering means file you could
specify using <code>sd.recenter</code> on each run on 