Evidence map›Paper›PMID 28982821›Full record

ArticleBMJ open2017

Comparing human papillomavirus vaccine concerns on Twitter: a cross-sectional study of users in Australia, Canada and the UK.

Gilla K Shapiro, Didi Surian, Adam G Dunn, Ryan Perry, Margaret Kelaher

Abstract readComparative Study
In one paragraph

Article in BMJ open, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

34 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. TeenVac.org: A Mobile Web App to Improve Human Papillomavirus Vaccine Uptake for Adolescent Boys.The Journal of adolescent health : official publication of the Society for Adolescent Medicine · 2025
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  16. HPV Vaccination: Polish-Language Facebook Discourse Analysis.International journal of environmental research and public health · 2022
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Gilla K ShapiroDepartment of Psychology, McGill University, Montreal, Canada.
Didi SurianCentre for Health Informatics, Australian Institute of Health Innovation, Macquarie University, Sydney, New South Wales, Australia.
Adam G DunnCentre for Health Informatics, Australian Institute of Health Innovation, Macquarie University, Sydney, New South Wales, Australia.
Ryan PerryCentre for Health Policy, School of Population and Global Health, University of Melbourne, Melbourne, Victoria, Australia.
Margaret KelaherHead Evaluation and Implementation Science, Centre for Health Policy, School of Population and Global Health, University of Melbourne, Melbourne, Victoria, Australia.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveOpposition to human papillomavirus (HPV) vaccination is common on social media and has the potential to impact vaccine coverage. This study aims to conduct an international comparison of the proportions of tweets about HPV vaccines that express concerns, the types of concerns expressed and the social connections among users posting about HPV vaccines in Australia, Canada and the UK.

designUsing a cross-sectional design, an international comparison of English language tweets about HPV vaccines and social connections among Twitter users posting about HPV vaccines between January 2014 and April 2016 was conducted. The Health Belief Model, one of the most widely used theories in health psychology, was used as the basis for coding the types of HPV vaccine concerns expressed on Twitter.

settingThe content of tweets and the social connections between users who posted tweets about HPV vaccines from Australia, Canada and the UK. POPULATION: 16 789 Twitter users who posted 43 852 tweets about HPV vaccines.

main outcome measuresThe proportions of tweets expressing concern, the type of concern expressed and the proportions of local and international social connections between users.

resultsTweets expressing concerns about HPV vaccines made up 14.9% of tweets in Canada, 19.4% in Australia and 22.6% in the UK. The types of concerns expressed were similar across the three countries, with concerns related to 'perceived barriers' being the most common. Users expressing concerns about HPV vaccines in each of the three countries had a relatively high proportion of international followers also expressing concerns.

conclusionsThe proportions and types of HPV vaccine concerns expressed on Twitter were similar across the three countries. Twitter users who mostly expressed concerns about HPV vaccines were better connected to international users who shared their concerns compared with users who did not express concerns about HPV vaccines.

Indexed as

Attitude to HealthPapillomavirus VaccinesAustraliaCanadaCross-Sectional StudiesHumansSocial MediaUnited KingdomVaccinationPapillomavirus VaccinesHealth Belief ModelHuman papillomavirusSocial media.TwitterVaccination

Identifiers

PMID28982821
PMCPMC5640044

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.