MATERIALS AND METHODS
In this prospective observational study,
all adolescents (defined by the Centers
for Disease Control and Prevention as
age 13-24 years20) who were attending
the Colorado Adolescent Maternity Program
(CAMP) and who delivered at the
University of Colorado Hospital over the
18-month period of June 1, 2008, to November
30, 2009, were eligible for inclusion
in the study cohort.