tandard deviation in the stratum of Y1 (number of men and women aged between 0 and 19)(numeric)</p></dd>

    <dt>S2</dt>
<dd><p>Standard deviation in the stratum of Y2 (number of men and women aged between 20 and 39) (numeric)</p></dd>

    <dt>S3</dt>
<dd><p>Standard deviation in the stratum of Y3 (number of men and women aged between 40 and 64) (numeric)</p></dd>

	<dt>S4</dt>
<dd><p>Standard deviation in the stratum of Y4 (number of men and women aged between 64 and over) (numeric)</p></dd>

    <dt>cen