Validity and reliability of a survey to identify vaccine-hesitant parents

Douglas J. Opel, James A. Taylor, Rita Mangione-Smith, Cam Solomon, Chuan Zhao, Sheryl L Catz, Diane Martin

Research output: Contribution to journalArticle

122 Scopus citations

Abstract

Objective: To assess the construct validity and reliability of the Parent Attitudes about Childhood Vaccines survey. Study Design: Cross-sectional survey of parents of 19-35. month old children in a closed model HMO. We used factor analysis to confirm survey sub-domains and Cronbach's α to determine the internal consistency reliability of sub-domain scales. Construct validity was assessed by linking parental responses to their child's immunization record. Results: Our response rate was 46% (N=230). Factor analysis identified 3 factors that explained 70% of the total variance for the 18 survey items. We deleted 3 items that failed to load highly (>4) on an identified factor, correlated poorly with other items, or had a hesitant response that was not associated with increased under-immunization. Cronbach's α coefficients for the 3 sub-domain scales created by grouping the remaining 15 items were .74, .84, and .74, respectively. Children of parents with survey scores of 50-79 had 14% more days under-immunized from birth to 19. months (95% CI: 8.0, 20.5) than those with parents who scored <50. Scores of ≥80 were associated with 51% more days under-immunized (95% CI: 38.2, 63.4). Conclusion: The revised survey is a valid and reliable instrument to identify vaccine-hesitant parents.

Original languageEnglish (US)
Pages (from-to)6598-6605
Number of pages8
JournalVaccine
Volume29
Issue number38
DOIs
StatePublished - Sep 2 2011
Externally publishedYes

Keywords

  • Health care survey
  • Immunization
  • Public health
  • Vaccination

ASJC Scopus subject areas

  • Immunology and Microbiology(all)
  • Infectious Diseases
  • Public Health, Environmental and Occupational Health
  • veterinary(all)
  • Molecular Medicine

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  • Cite this

    Opel, D. J., Taylor, J. A., Mangione-Smith, R., Solomon, C., Zhao, C., Catz, S. L., & Martin, D. (2011). Validity and reliability of a survey to identify vaccine-hesitant parents. Vaccine, 29(38), 6598-6605. https://doi.org/10.1016/j.vaccine.2011.06.115