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Evaluation of Vaccination Reminder/Recall Systems for Adolescent Patients

This study has been completed.
Centers for Disease Control and Prevention
Information provided by (Responsible Party):
Peter G Szilagyi MD MPH, University of Rochester Identifier:
First received: January 25, 2010
Last updated: December 16, 2015
Last verified: December 2015

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.

Condition Intervention
Immunization Status Well Child Care Visit Other: Autodialer Other: Letters

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single (Investigator)
Primary Purpose: Health Services Research
Official Title: Randomized Controlled Trial of an Automated, Managed Care-based Reminder/Recall System on Improving Rates of Immunization and Preventive Care Visits for Publically Insured Adolescents

Further study details as provided by Peter G Szilagyi MD MPH, University of Rochester:

Primary Outcome Measures:
  • Fully Vaccinated (Tdap, Menactra and 3 Doses of HPV (if Female)) [ Time Frame: 12 months ]
  • Well Child Care Status [ Time Frame: 12 months ]
    Received recommended well child care visit

Enrollment: 10599
Study Start Date: December 2009
Study Completion Date: December 2010
Primary Completion Date: December 2010 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Autodialer
Autodialer reminder/recall
Other: Autodialer
Autodialer telephone calls
Experimental: Letters
Mailed reminder letters
Other: Letters
Mailed reminder letters
No Intervention: Controls


Ages Eligible for Study:   11 Years to 18 Years   (Child, Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

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
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01057888

Sponsors and Collaborators
University of California, Los Angeles
Centers for Disease Control and Prevention
Principal Investigator: Peter G Szilagyi, MD, MPH University of Rochester
  More Information

Responsible Party: Peter G Szilagyi MD MPH, Professor, University of Rochester Identifier: NCT01057888     History of Changes
Other Study ID Numbers: RSRB00026761
Study First Received: January 25, 2010
Results First Received: October 18, 2012
Last Updated: December 16, 2015

Keywords provided by Peter G Szilagyi MD MPH, University of Rochester:
Immunization status for:
HPV (if female)
Well child care visit processed this record on September 21, 2017