School network

This work uses data from Add Health, a program project designed byUdry,Richard J. Bearman, Peter S. & Harris, Kathleen Mullan, and funded by agrant P01-HD31921 from the National Institute of Child Health and HumanDevelopment, with cooperative funding from 17 other agencies. Specialacknowledgment is due Ronald R. Rindfuss and Barbara Entwisle for assistancein the original design. Persons interested in obtaining data files from AddHealth should contact Add Health, Carolina Population Center, 123 W. FranklinStreet, Chapel Hill, NC 27516–2524 ([e-mail]).