Population
32,742 19- to 35-month-old children in the United States
Design
Cross-sectional
Authors
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May drive unnecessary costs; leaves open whether coordinating providers reduces extraimmunization.
Extraimmunization occurs in 21% of US children, often driven by having multiple immunization providers, and results in substantial unnecessary healthcare costs.
Suzanne M. Feikema (2000) studied this question.
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