Age-Specific Strategies for Immunization Reminders and Recalls

University of Michigan10,175 enrolled

Overview

The objective of this study was to assess the relative effectiveness of reminder/recall strategies among children who live in an urban area targeting alternative age-specific milestones.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

HEALTH_SERVICES_RESEARCH

Masking

SINGLE

Enrollment

10,175

Conditions

Childhood Vaccination

Interventions

Childhood vaccination reminder / recall notificationBEHAVIORAL

Eligibility

Sex: ALLMin age: 7 MonthsMax age: 19 Months

Medical Language ↔ Plain English

Inclusion Criteria: * 7 and 19 month recall groups: children not up to date for at least one vaccination at the time of notification * 12 month reminder group: 12 months of age at time of notification * Hib vaccination series was not assessed due to a vaccine shortage Exclusion Criteria: * Children were ineligible for notifications if they were designated in the Michigan Care Improvement Registry (MCIR)as having died, documented previously as having moved out of the jurisdiction ("Moved or Gone Elsewhere" (MOGE)), opted out of MCIR by their parent, or if they had been previously mailed for MCIR reminder/recall activity in the prior 60 days.

Locations (1)

University of Michigan, Child Health Evaluation and Research (CHEAR) Unit

Ann Arbor, Michigan, United States

Outcomes

Primary Outcomes

new immunization doses

Receipt of 1 or more childhood vaccinations with administration date following reminder notification date

Time frame: within 60 days of reminder notification

Secondary Outcomes

Cost of vaccination reminder

Estimated personnel costs to generate reminder notifications, print, fold / stuff envelopes and follow up on undeliverable notifications

Time frame: During the time of reminder notification preparation and mailing and approximately 1 month following mailing

historical immunization doses

One or more vaccination recorded with the date of administration prior to the reminder notification date

Time frame: within 60 days of reminder notification

waived doses

One or more immunization waiver (non-administration) recorded with the date following the date of reminder notification

Time frame: within 60 days of reminder notification

Data from ClinicalTrials.gov

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