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How Much Does a Regional Immunization Registry Increase Documented Immunization Rates at Primary Care Sites in Rural Colorado?

  • Allison Kempe
    Correspondence
    Address correspondence to Allison Kempe, MD, MPH, The Children's Hospital, 1056 E 19th Ave, B032, Denver, CO 80218
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  • John F. Steiner
    Affiliations
    From the Departments of Pediatrics (Dr Kempe, Ms Renfrew, Ms Haas, and Dr Berman), Preventive Medicine and Biometrics (Drs Kempe and Steiner, and Ms Renfrew), and Internal Medicine (Dr Steiner), University of Colorado Health Sciences Center and the Children's Hospital Pediatrics Outcomes Program (Dr Kempe, Ms Lowery, and Dr Berman), Denver, Colo.
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  • Brenda L. Renfrew
    Affiliations
    From the Departments of Pediatrics (Dr Kempe, Ms Renfrew, Ms Haas, and Dr Berman), Preventive Medicine and Biometrics (Drs Kempe and Steiner, and Ms Renfrew), and Internal Medicine (Dr Steiner), University of Colorado Health Sciences Center and the Children's Hospital Pediatrics Outcomes Program (Dr Kempe, Ms Lowery, and Dr Berman), Denver, Colo.
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  • Elaine Lowery
    Affiliations
    From the Departments of Pediatrics (Dr Kempe, Ms Renfrew, Ms Haas, and Dr Berman), Preventive Medicine and Biometrics (Drs Kempe and Steiner, and Ms Renfrew), and Internal Medicine (Dr Steiner), University of Colorado Health Sciences Center and the Children's Hospital Pediatrics Outcomes Program (Dr Kempe, Ms Lowery, and Dr Berman), Denver, Colo.
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  • Kathleen Haas
    Affiliations
    From the Departments of Pediatrics (Dr Kempe, Ms Renfrew, Ms Haas, and Dr Berman), Preventive Medicine and Biometrics (Drs Kempe and Steiner, and Ms Renfrew), and Internal Medicine (Dr Steiner), University of Colorado Health Sciences Center and the Children's Hospital Pediatrics Outcomes Program (Dr Kempe, Ms Lowery, and Dr Berman), Denver, Colo.
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  • Stephen Berman
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      Objective.—To determine increases in immunization up-to-date (UTD) rates at a rural pediatric practice with the sequential addition of records from other sites in a 2-county region.
      Design/Methods.—UTD rates for children aged 3 months to 35 months (n = 876) were determined for the index practice and then recalculated after sequential addition of records from 1) the other private practice in the region, 2) 7 public primary care sites, and 3) 2 public health clinics in the region.
      Results.—Adding records from all sites increased documented UTD rates in the index practice from 49% to 64% at 3 months (N = 33, P = 0.025), 50% to 68% at 5 months (N = 38, P = 0.008), 28% to 45% at 7 months (N = 113, P < .01), 29% to 54% at 12 months (N = 200, P < .001), 11% to 35% at 19 months (N = 124, P < .001), and 10% to 33% at 24 months (N = 368, P < .001).
      Conclusions.—Regional registries will be valuable tools for immunization delivery if there is an ongoing commitment to effective collection of current and historical immunization data.

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