TEI uses ISO 5218:2004 to assign sexuality of persons in a document ( with attributes being given as 1 for male, 2 for female, 9 for non-applicable, and 0 for unknown). This is an outmoded and problematic representation of sexuality, and in particular formally assigns women to be secondary to men.
There are other discussions online regarding how best to tackle sexuality in markup, and the problems in using ISO 5218 - see the w3c lists here: http://lists.w3.org/Archives/Public/public-contacts-coord/2010JulSep/0010.html .
I would like to see TEI move away from enshrining women as the second sex in their markup - as Steven Ramsay tweeted:
<author>Simone de Beauvoir</author> <sex value="2">female</sex> *sigh*
Can a discussion be had about how best to achieve this? Your current approach is both outmoded and offensive.