Increasing provision of adolescent vaccines in primary care: a randomized controlled trial.

Objectives: To assess the effectiveness of in-person and webinar-delivered AFIX (Assessment, Feedback, Incentives, and eXchange) consultations for increasing adolescent vaccine coverage.

Methods: We randomly assigned 91 primary care clinics in North Carolina, serving 107 443 adolescents, to receive no consultation or an in-person or webinar AFIX consultation. We delivered in-person consultations in April through May 2011 and webinar consultations in May through August 2011.

Comparing in-person and webinar delivery of an immunization quality improvement program: a process evaluation of the adolescent AFIX trial.

Background: Immunization quality improvement programs are often limited by the cost and inconvenience associated with delivering face-to-face consultations to primary care providers. To investigate a more efficient mode of intervention delivery, we conducted a process evaluation that compared in-person consultations to those delivered via interactive webinar.

Methods: The Centers for Disease Control and Prevention's Assessment, Feedback, Incentives, and eXchange (AFIX) Program is an immunization quality improvement program implemented in all 50 states.

Organizational correlates of adolescent immunization: findings of a state-wide study of primary care clinics in North Carolina.

Objective: To analyze organizational correlates of immunization coverage among adolescents served by high-volume primary care providers in North Carolina.

Methods: We randomly selected 91 clinics with at least 200 active records for patients ages 11-18 in the North Carolina Immunization Registry. For the 105,121 adolescents served by these clinics, we obtained immunization status for 6 vaccines, including human papillomavirus (HPV) vaccine (females only); meningococcal conjugate; and tetanus, diphtheria, and pertussis booster (Tdap).