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Updated: Jun 10, 2026

Facilitating the Analysis of Immunological Data with Visual Analytic Techniques
Published on: January 2, 2011
Addressing adolescent immunization disparities: a retrospective analysis of school-based health center immunization
Steven G Federico1, Lisa Abrams, Rachel M Everhart
1Denver Health and Hospital Authority, 1001 Yosemite, Suite 200, MC 1916, Denver, CO 80238, USA. steve.federico@dhha.org
Objectives:
We compared completion rates for adolescent immunization series administered at school-based health centers (SBHCs) to completion rates for series administered at community health centers (CHCs) within a single integrated delivery system.
Methods:
We performed a retrospective analysis of data from an immunization registry for patients aged 12-18 years. Patients were assigned to either an SBHC or a CHC during the study interval based on utilization. We used bivariate analysis to compare immunization series completion rates between the 2 groups and multivariate analysis to compare risk factors for underimmunization. We performed subanalyses by ages 12-15 years versus ages 16-18 years for human papillomavirus (HPV) and for the combination of HPV; tetanus, diptheria, and pertussis (Tdap); and tetravalent meningococcus virus.
Results:
SBHC users had significantly higher completion rates (P<.001) for hepatitis B, Tdap, inactivated poliovirus, varicella, measles/mumps/rubella, and HPV for ages 16-18 years, and for the combination of HPV, Tdap, and MCV4 for ages 16-18 years. CHC users had higher completion rates for tetanus and diphtheria.
Conclusions:
SBHCs had higher completion rates than did CHCs for immunization series among those aged 12-18 years, despite serving a population with limited insurance coverage.
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