Population Versus Practice-based Interventions to Increase Immunizations

Not Applicable

Completed

• Conditions: Health Services Research; Comparative Effectiveness; Immunization
• Interventions: Behavioral: Recall conducted centrally by local health department; Behavioral: Recall conducted by private practices

• Registration Number: NCT01296906
• Lead Sponsor: University of Colorado, Denver

Brief Summary

One of the nation's major health priorities, as outlined in Healthy People 2010, is to increase the proportion of children aged 19 to 35 months who have received all universally recommended vaccines. This study will compare two interventions for increasing immunization rates in this age group, one using well-studied primary care practice-based methods and the other using innovative technologies to increase immunization rates at the population-level. Results of this study will provide data that will be relevant nationally in guiding future investment of resources to increase up-to-date rates in young children prior to school entry.

Hypothesis: Population-based approaches will be more effective than practice-based interventions at increasing immunizations among 19-35 month olds.

Detailed Description

Not available

Study Timeline

• Study Start: 2010-05
• Primary Completion: 2010-12
• Study First Submitted: 2011-02-14
• Study First Submitted QC: 2011-02-14
• Study First Posted: 2011-02-16
• Study Completion: 2012-09
• Status Verified: 2013-06
• Last Update Submitted: 2013-06-19
• Last Update Posted: 2013-06-21

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 31567

Inclusion Criteria

• child between the age of 19-35 months
• has an address in a specified study county in the state immunization registry
• child is in need of at least one recommended immunization

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Exclusion Criteria

• child has opted out of the state immunization registry
• child is up-to-date on all recommended immunizations

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Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Population-based Reminder/Recall	Recall conducted centrally by local health department	Recall is performed centrally by public health departments for all children in need of immunizations in a geographic area.
Practice-based Reminder/Recall	Recall conducted by private practices	Reminder/Recall is performed by individual private practices for their patients who appear in need of immunizations.

Primary Outcome Measures

Name	Time	Method
Evaluate effectiveness of population-based reminder/recall methods versus practice-based reminder/recall methods in 14 Colorado counties (rural and urban)	6 months post-intervention (December 2010)	The primary outcome measures will be: 1) change in up-to-date rates from baseline levels 6 months after the intervention (T-1) for 19-35 month olds in population-based compared to practice-based intervention counties and 2) percent of children who were not up-to-date prior to recall (T-0) who received any additional new vaccine in each type of intervention county.