Age-Specific Strategies for Immunization Reminders and Recalls

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

10175 participants

Study Classification

INTERVENTIONAL

Study Start Date

2007-10-31

Study Completion Date

2010-09-30

Brief Summary

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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.

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Detailed Description

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Conditions

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Childhood Vaccination

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

HEALTH_SERVICES_RESEARCH

Blinding Strategy

SINGLE

Participants

Study Groups

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No reminder / recall notice

No childhood vaccination reminder / recall notification sent. Stratified by age cohort of subjects: 7 month recall; 12 month reminder; 19 month recall

Group Type NO_INTERVENTION

No interventions assigned to this group

mailed reminder / recall notice

Childhood vaccination reminder / recall notification sent by postal mail. Stratified by age cohort of subjects: 7 month recall; 12 month reminder; 19 month recall

Group Type EXPERIMENTAL

Childhood vaccination reminder / recall notification

Intervention Type BEHAVIORAL

Interventions

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Childhood vaccination reminder / recall notification

Intervention Type BEHAVIORAL

Other Intervention Names

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Reminder / recall notifications sent by postal mail

Eligibility Criteria

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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.

Minimum Eligible Age

7 Months

Maximum Eligible Age

19 Months

Eligible Sex

ALL

Accepts Healthy Volunteers

No