Comparative Effectiveness Trial of Two Reminder/Recall Methods to Increase Immunization Rates in Young Children
Public ClinicalTrials.gov record NCT01557621. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
Center for Research in Implementation Science and Prevention (CRISP): Project 1: Comparative Effectiveness Trial of Two Reminder/Recall Methods to Increase Immunization Rates in Young Children
Study identification
- NCT ID
- NCT01557621
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Not applicable
- Lead sponsor
- University of Colorado, Denver
- Other
- Enrollment
- 68,000 participants
Conditions and interventions
Conditions
Interventions
- Collaborative Pop-Based R/R: Mail-Only Group Behavioral
- Collaborative Pop-Based R/R: Phone/Mail Group Behavioral
- Practice-based Recall Behavioral
Behavioral
Eligibility (public fields only)
- Age range
- 19 Months to 5 Years
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Aug 31, 2012
- Primary completion
- Nov 30, 2015
- Completion
- Nov 30, 2015
- Last update posted
- Dec 15, 2015
2012 – 2015
United States locations
- U.S. sites
- 2
- U.S. states
- 1
- U.S. cities
- 2
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| University of Colorado Denver | Aurora | Colorado | 80045 | — |
| Colorado Immunization Information System | Denver | Colorado | 80246-1530 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT01557621, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Dec 15, 2015 · Synced Apr 29, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT01557621 live on ClinicalTrials.gov.