To my knowledge, it didn't specify. I got the information on that survey through a secondary source and didn't access the actual survey personally; here is the citation to the article the information came from:
Capozza, Korey. "Team Sports Give Girls a Career Edge." Prevention. 56.2, Feb 2004: 115. Expanded Academic ASAP. Gale. DISCUS. 27 July 2008 <http://find.galegroup.com>
