Age-Specific Strategies for Immunization Reminders and Recalls

University of Michigan

Status: Completed

Conditions: Childhood Vaccination

Treatments: Behavioral: Childhood vaccination reminder / recall notification

Study type: Interventional

Funder types: Other; Other U.S. Federal agency

Identifiers

NCT01770496

U01IP000088-01

Details and patient eligibility

About

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.

Enrollment: 10,175 patients

Sex: All

Ages: 7 to 19 months old

Volunteers: No Healthy Volunteers

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.

Trial design

Primary purpose: Health Services Research

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Single Blind

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10,175 participants in 2 patient groups

No reminder / recall notice

No Intervention group

Description:

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

mailed reminder / recall notice

Experimental group

Description:

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

Treatment:

Behavioral: Childhood vaccination reminder / recall notification