HPV vaccine coverage in Australia and associations with HPV vaccine information exposure among Australian Twitter users

Amalie Dyda, Zubair Shah, Didi Surian, Paige Martin, Enrico Coiera, Aditi Dey, Julie Leask, Adam G. Dunn

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Introduction: Human papillomavirus (HPV) vaccine coverage in Australia is 80% for females and 76% for males. Attitudes may influence coverage but surveys measuring attitudes are resource-intensive. The aim of this study was to determine whether Twitter-derived estimates of HPV vaccine information exposure were associated with differences in coverage across regions in Australia. Methods: Regional differences in information exposure were estimated from 1,103,448 Australian Twitter users and 655,690 HPV vaccine related tweets posted between 6 September 2013 and 1 September 2017. Tweets about HPV vaccines were grouped using topic modelling; an algorithm for clustering text-based data. Proportional exposure to topics across 25 regions in Australia were used as factors to model HPV vaccine coverage in females and males, and compared to models using employment and education as factors. Results: Models using topic exposure measures were more closely correlated with HPV vaccine coverage (female: Pearson’s R = 0.75 [0.49 to 0.88]; male: R = 0.76 [0.51 to 0.89]) than models using employment and education as factors (female: 0.39 [−0.02 to 0.68]; male: 0.36 [−0.04 to 0.66]). In Australia, positively-framed news tended to reach more Twitter users overall, but vaccine-critical information made up higher proportions of exposures among Twitter users in low coverage regions, where distorted characterisations of safety research and vaccine-critical blogs were popular. Conclusions: Twitter-derived models of information exposure were correlated with HPV vaccine coverage in Australia. Topic exposure measures may be useful for providing timely and localised reports of the information people access and share to inform the design of targeted vaccine promotion interventions.

LanguageEnglish
Pages1488-1495
Number of pages8
JournalHuman Vaccines and Immunotherapeutics
Volume15
Issue number7-8
Early online date12 Apr 2019
DOIs
Publication statusPublished - Aug 2019

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Papillomavirus Vaccines
Vaccines
Blogging
Education
Cluster Analysis
Safety
Research

Bibliographical note

Copyright the Author(s) 2019. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Keywords

  • attitudes
  • human papillomavirus vaccines
  • media representation
  • Social media

Cite this

@article{2c2a8a1590734c7da9ec5927ddb9de4b,
title = "HPV vaccine coverage in Australia and associations with HPV vaccine information exposure among Australian Twitter users",
abstract = "Introduction: Human papillomavirus (HPV) vaccine coverage in Australia is 80{\%} for females and 76{\%} for males. Attitudes may influence coverage but surveys measuring attitudes are resource-intensive. The aim of this study was to determine whether Twitter-derived estimates of HPV vaccine information exposure were associated with differences in coverage across regions in Australia. Methods: Regional differences in information exposure were estimated from 1,103,448 Australian Twitter users and 655,690 HPV vaccine related tweets posted between 6 September 2013 and 1 September 2017. Tweets about HPV vaccines were grouped using topic modelling; an algorithm for clustering text-based data. Proportional exposure to topics across 25 regions in Australia were used as factors to model HPV vaccine coverage in females and males, and compared to models using employment and education as factors. Results: Models using topic exposure measures were more closely correlated with HPV vaccine coverage (female: Pearson’s R = 0.75 [0.49 to 0.88]; male: R = 0.76 [0.51 to 0.89]) than models using employment and education as factors (female: 0.39 [−0.02 to 0.68]; male: 0.36 [−0.04 to 0.66]). In Australia, positively-framed news tended to reach more Twitter users overall, but vaccine-critical information made up higher proportions of exposures among Twitter users in low coverage regions, where distorted characterisations of safety research and vaccine-critical blogs were popular. Conclusions: Twitter-derived models of information exposure were correlated with HPV vaccine coverage in Australia. Topic exposure measures may be useful for providing timely and localised reports of the information people access and share to inform the design of targeted vaccine promotion interventions.",
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author = "Amalie Dyda and Zubair Shah and Didi Surian and Paige Martin and Enrico Coiera and Aditi Dey and Julie Leask and Dunn, {Adam G.}",
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HPV vaccine coverage in Australia and associations with HPV vaccine information exposure among Australian Twitter users. / Dyda, Amalie; Shah, Zubair; Surian, Didi; Martin, Paige; Coiera, Enrico; Dey, Aditi; Leask, Julie; Dunn, Adam G.

In: Human Vaccines and Immunotherapeutics, Vol. 15, No. 7-8, 08.2019, p. 1488-1495.

Research output: Contribution to journalArticleResearchpeer-review

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T1 - HPV vaccine coverage in Australia and associations with HPV vaccine information exposure among Australian Twitter users

AU - Dyda,Amalie

AU - Shah,Zubair

AU - Surian,Didi

AU - Martin,Paige

AU - Coiera,Enrico

AU - Dey,Aditi

AU - Leask,Julie

AU - Dunn,Adam G.

N1 - Copyright the Author(s) 2019. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

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N2 - Introduction: Human papillomavirus (HPV) vaccine coverage in Australia is 80% for females and 76% for males. Attitudes may influence coverage but surveys measuring attitudes are resource-intensive. The aim of this study was to determine whether Twitter-derived estimates of HPV vaccine information exposure were associated with differences in coverage across regions in Australia. Methods: Regional differences in information exposure were estimated from 1,103,448 Australian Twitter users and 655,690 HPV vaccine related tweets posted between 6 September 2013 and 1 September 2017. Tweets about HPV vaccines were grouped using topic modelling; an algorithm for clustering text-based data. Proportional exposure to topics across 25 regions in Australia were used as factors to model HPV vaccine coverage in females and males, and compared to models using employment and education as factors. Results: Models using topic exposure measures were more closely correlated with HPV vaccine coverage (female: Pearson’s R = 0.75 [0.49 to 0.88]; male: R = 0.76 [0.51 to 0.89]) than models using employment and education as factors (female: 0.39 [−0.02 to 0.68]; male: 0.36 [−0.04 to 0.66]). In Australia, positively-framed news tended to reach more Twitter users overall, but vaccine-critical information made up higher proportions of exposures among Twitter users in low coverage regions, where distorted characterisations of safety research and vaccine-critical blogs were popular. Conclusions: Twitter-derived models of information exposure were correlated with HPV vaccine coverage in Australia. Topic exposure measures may be useful for providing timely and localised reports of the information people access and share to inform the design of targeted vaccine promotion interventions.

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