Journal
VACCINE
Volume 29, Issue 38, Pages 6598-6605Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.vaccine.2011.06.115
Keywords
Immunization; Vaccination; Public health; Health care survey
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Funding
- Seattle Children's Center
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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 alpha 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 a 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% Cl: 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. (C) 2011 Elsevier Ltd. All rights reserved.
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