Population Versus Practice-based Interventions to Increase Immunizations

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

31567 participants

Study Classification

INTERVENTIONAL

Study Start Date

2010-05-31

Study Completion Date

2012-09-30

Brief Summary

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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.

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Detailed Description

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Conditions

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Health Services Research Comparative Effectiveness Immunization

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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Population-based Reminder/Recall

Recall is performed centrally by public health departments for all children in need of immunizations in a geographic area.

Group Type EXPERIMENTAL

Recall conducted centrally by local health department

Intervention Type BEHAVIORAL

A centralized recall of children 19-35 months will be conducted through local health departments. CIIS will identify a cohort of 19-35 month olds with an who are in need of an immunization and will coordinate up to 3 mailers to children who are not current for recommended immunizations.

Practice-based Reminder/Recall

Reminder/Recall is performed by individual private practices for their patients who appear in need of immunizations.

Group Type EXPERIMENTAL

Recall conducted by private practices

Intervention Type BEHAVIORAL

All practices in these counties will receive training on practice-based R/R using the Colorado Immunization Information System (CIIS or immunization registry). Practices will receive a recommended schedule for conducting recall in 19-35 month children and educational materials to use within their practices to promote compliance with the infant vaccination schedule. Individual practices will make their own decisions about the extent to which they follow the recommendations and implement recall within their practice. Although the study team will not provide them with any additional interventions, we will track any other interventions they independently do (websites, newsletters, telephone informational systems) in order to assess the effect of these additional interventions.

Interventions

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Recall conducted by private practices

All practices in these counties will receive training on practice-based R/R using the Colorado Immunization Information System (CIIS or immunization registry). Practices will receive a recommended schedule for conducting recall in 19-35 month children and educational materials to use within their practices to promote compliance with the infant vaccination schedule. Individual practices will make their own decisions about the extent to which they follow the recommendations and implement recall within their practice. Although the study team will not provide them with any additional interventions, we will track any other interventions they independently do (websites, newsletters, telephone informational systems) in order to assess the effect of these additional interventions.

Intervention Type BEHAVIORAL

Recall conducted centrally by local health department

A centralized recall of children 19-35 months will be conducted through local health departments. CIIS will identify a cohort of 19-35 month olds with an who are in need of an immunization and will coordinate up to 3 mailers to children who are not current for recommended immunizations.

Intervention Type BEHAVIORAL

Eligibility Criteria

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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