U.S. gender pay gap emerges early, study finds

In the same class, less than 2 percent of fathers were out of the work force in 2003, and less than 2 percent were working part time, it said.

The study, entitled "Behind the Pay Gap," used data from the U.S. Department of Education. It analyzed some 9,000 college graduates from 1992-93 and more than 10,000 from 1999-2000.

(Editing by Cynthia Osterman; Reuters Messaging: ellen.wulfhorst.reuters.com@reuters.net)