Evaluation of Vaccination Reminder/Recall Systems for Adolescent Patients

The investigators will design and implement a randomized clinical trial to test, on a community-wide level, the effectiveness of managed care based tracking/reminder/recall on improving vaccination coverage among adolescents. The investigators propose a randomized controlled trial to evaluate the effectiveness of reminder/recall for adolescents: 10,599 adolescents within the managed care organization (MCO) will be randomized into one of three arms: 1) mailed reminders, 2) autodialer telephone messages or 3) standard of care of their practice (no messages from the intervention). Hypothesis 1: Reminder/recall will increase the receipt of immunizations and preventive services Hypothesis 2: Telephone (autodialer) reminders will be more effective than mailed reminders Hypothesis 3: The impact of reminders will be greatest for the most high-risk subgroups which have low baseline immunization rates. Hypothesis 4: Mailed reminders will be more costly (and less effective) than telephone reminders.

Sex

All

Minimum age

11 Years

Maximum age

18 Years

Inclusion Criteria:

* Member of the Monroe Plan for Medical Care (managed care organization)
* Patient of a participating practice
* Ages 10.75 to \<18 years of age

Exclusion Criteria:

* Member of the Monroe Plan for Medical care for less than 6 months
* ICD-9 diagnosis of 999.4 for anaphylactic reaction to a vaccine or its components.
* Encephalopathy within 7 days of a previous dose of a pertussis containing vaccine not attributable to another identifiable cause
* Guillain-Barre- ICD-9 code is 357.0