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Disparities in preschool immunization coverage associated with maternal age
Daniel A Salmon1, Philip J Smith, William K Y Pan
1Institute for Vaccine Safety and Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.
Human Vaccines
|June 27, 2009
Summary
Maternal age is linked to preschool immunization coverage, with older mothers having higher vaccination rates for their children. This finding highlights maternal age as a key factor in ensuring children are up-to-date on vaccines.
Area of Science:
- Pediatrics
- Public Health
- Epidemiology
Background:
- Associations between maternal age and preschool immunization coverage remain unclear.
- Understanding factors influencing vaccination coverage is crucial for public health initiatives.
Purpose of the Study:
- To determine if maternal age is associated with preschool immunization coverage.
- To assess the importance of maternal age relative to other factors affecting vaccination coverage.
Main Methods:
- Utilized data from the 2001-2003 National Immunization Survey (NIS).
- Defined up-to-date (UTD) immunization status based on recommended vaccine doses.
- Employed bivariate, multivariate, and classification tree analyses to evaluate associations.
Main Results:
- UTD immunization coverage significantly increased with maternal age up to 26 years.
- Coverage was 64% for children of 17-year-old mothers, increasing by approximately 1.8% per year for mothers aged 17-26.
- Maternal age emerged as the most important factor predicting UTD coverage, even after adjusting for other variables.
Conclusions:
- Maternal age is a significant predictor of preschool immunization coverage.
- Children born to younger mothers exhibit lower immunization rates.
- Further research is needed to identify reasons for underimmunization in this population.
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