Effectiveness of educational poster on knowledge of emergency management of dental trauma - Part 2: Cluster randomised controlled trial for secondary school students

Cecilia Young, Kin Yau Wong, Lim K. Cheung

Research output: Journal article publicationJournal articleAcademic researchpeer-review

7 Citations (Scopus)


Objective: To investigate the effectiveness of educational poster on improving secondary school students' knowledge of emergency management of dental trauma. Methods: A cluster randomised controlled trial was conducted. 16 schools with total 671 secondary students who can read Chinese or English were randomised into intervention (poster, 8 schools, 364 students) and control groups (8 schools, 305 students) at the school level. Baseline knowledge of dental trauma was obtained by a questionnaire. Poster containing information of dental trauma management was displayed in a classroom for 2 weeks in each school in the intervention group whereas in the control group there was no display of such posters. Students of both groups completed the same questionnarie after 2 weeks. Results: Two-week display of posters improved the knowledge score by 1.25 (p-value = 0.0407) on average. Conclusion: Educational poster on dental trauma management significantly improved the level of knowledge of secondary school students in Hong Kong. Trial Registration: HKClinicalTrial.com HKCTR-1343 ClinicalTrials.gov NCT01809457.
Original languageEnglish
Article numbere101972
JournalPLoS ONE
Issue number8
Publication statusPublished - 5 Aug 2014
Externally publishedYes

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Medicine(all)

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