Journal
VACCINES
Volume 10, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/vaccines10122005
Keywords
human papillomavirus vaccine; HPV; Japan; vaccine acceptability; college; university students; vaccine intention; knowledge; health literacy; health belief model
Categories
Funding
- Ministry of Education, Culture, Sports, Science and Technology, Japan
- [19K22737]
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In a trial conducted among university students in Japan, it was found that the use of LINE-assisted provision of information effectively improved HPV vaccine intention. Although it did not directly increase intention compared to conventional methods, the intervention had a significant impact on increasing vaccine intention among the students.
We conducted a prospective, randomized two-arm, parallel group, and open label trial to investigate whether the use of LINE would increase HPV vaccine intention among not completely vaccinated university students. In June 2020, we recruited students aged between 18 and 35 years from four universities in Japan. Among the 357 enrollees (female, 53%), 178 and 179 participants were randomized into the LINE and Mail groups, respectively. At baseline, within three years, vaccine intention was observed in 40% vs. 42% of participants, respectively. At the first intervention, which provided similar PDF leaflets about HPV vaccine and cervical cancer prevention, there was no significant difference in vaccine intention between the two groups. However, at the second intervention of LINE-assisted knowledge intervention for 5 days per week for 7 weeks, the LINE group had a higher proportion of vaccine intention than the no intervention group (66% vs. 44%, OR: 2.62, 95% confidence interval (CI): 1.59-4.35) in per-protocol analysis. The significance remained in the intention-to-treat analysis of multiply imputed datasets. Although LINE did not directly increase HPV vaccine intention compared to conventional posts, the LINE-assisted provision of information was effective in improving HPV vaccine intention among Japanese university and college students.
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