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Differences in school factors associated with adolescent HPV vaccination initiation and completion coverage in three Australian states

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Sisnowski, J, Vujovich-Dunn, C, Gidding, H, Brotherton, J, Wand, H, Lorch, R, Veitch, M, Sheppeard, V, Effler, P, Skinner, SR, Venn, A ORCID: 0000-0001-7090-1398, Davies, C, Hocking, J, Whop, L, Leask, J, Canfell, K, Sanci, L, Smith, M, Kang, M, Temple-Smith, M, Kidd, M, Burns, S, Selvey, L, Meijer, D, Ennis, S, Thomson, C, Lane, N, Kaldor, J and Guy, R 2021 , 'Differences in school factors associated with adolescent HPV vaccination initiation and completion coverage in three Australian states' , Vaccine, vol. 39, no. 41 , pp. 6117-6126 , doi: 10.1016/j.vaccine.2021.08.076.

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Abstract

Background: Schools are the primary setting for the delivery of adolescent HPV vaccination in Australia. Although this strategy has achieved generally high vaccination coverage, gaps persist for reasons that are mostly unknown. This study sought to identify school-level correlates of low vaccination course initiation and completion in New South Wales, Tasmania, and Western Australia to inform initiatives to increase uptake.Methods: Initiation was defined as the number of first doses given in a school in 2016 divided by vaccine-eligible student enrolments. Completion was the number of third doses given in a school in 2015-2016 divided by the number of first doses. Low initiation and completion were defined as coverage ≤ 25thpercentile of all reporting schools. We investigated correlations between covariates using Spearman's rank correlation coefficients. Due to multicollinearity, we used univariable logistic regression to investigate associations between school characteristics and low coverage.Results: Median initiation was 84.7% (IQR: 75.0%-90.4%) across 1,286 schools and median completion was 93.8% (IQR: 86.0%-97.3%) across 1,295 schools. There were strong correlations between a number of school characteristics, particularly higher Indigenous student enrolments and lower attendance, increasing remoteness, higher postcode socioeconomic disadvantage, and smaller school size. Characteristics most strongly associated with low initiation in univariate analyses were small school size, location in Tasmania, and schools catering for special educational needs. Low completion was most strongly associated with schools in Tasmania and Western Australia, remote location, small size, high proportion of Indigenous student enrolments, and low attendance rates.Conclusion: This study provides indicative evidence that characteristics of schools and school populations are associated with the likelihood of low initiation and completion of the HPV vaccination course. The findings will guide further research and help target initiatives to improve vaccination uptake in schools with profiles associated with lower coverage.

Item Type: Article
Authors/Creators:Sisnowski, J and Vujovich-Dunn, C and Gidding, H and Brotherton, J and Wand, H and Lorch, R and Veitch, M and Sheppeard, V and Effler, P and Skinner, SR and Venn, A and Davies, C and Hocking, J and Whop, L and Leask, J and Canfell, K and Sanci, L and Smith, M and Kang, M and Temple-Smith, M and Kidd, M and Burns, S and Selvey, L and Meijer, D and Ennis, S and Thomson, C and Lane, N and Kaldor, J and Guy, R
Keywords: cervical cancer, HPV vaccines, health equity, immunisation programs, primary prevention, school
Journal or Publication Title: Vaccine
Publisher: Elsevier Science
ISSN: 0264-410X
DOI / ID Number: 10.1016/j.vaccine.2021.08.076
Copyright Information:

Copyright 2021 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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