Note: EMR-identified patients were initially contacted by practice staff during office visits, by letter, and/or by phone. If the patient was successfully contacted and agreeable to participation, he/she was referred to study staff who completed phone screens to determine final eligibility.
*The number of EMR-identified patients by practice include the following: n=74, 85, and 50 for pediatric practices 1, 2, and 3, respectively (practice 3 is an estimate); n=51, 125, 194 for family medicine practices 1, 2, and 3, respectively.