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Title: Factors influencing the popularity of a health-related answer on a Chinese question-and-answer website: case study
Authors: Li, Jinhui
Zheng, Han
Duan, Xu
Keywords: Social sciences::Communication
Issue Date: 2021
Source: Li, J., Zheng, H. & Duan, X. (2021). Factors influencing the popularity of a health-related answer on a Chinese question-and-answer website: case study. Journal of Medical Internet Research, 23(9), e29885-.
Journal: Journal of Medical Internet Research 
Abstract: Background: Social question-and-answer (Q&A) sites have become an important venue for individuals to obtain and share human papillomavirus (HPV) vaccine knowledge. Objective: This study aims to examine how different features of an HPV vaccine–related answer are associated with users’ response behaviors on social Q&A websites. Methods: A total of 2953 answers and 270 corresponding questions regarding the HPV vaccine were collected from a leading Chinese social Q&A platform, Zhihu. Three types of key features, including content, context, and contributor, were extracted and coded. Negative binomial regression models were used to examine their impact on the vote and comment count of an HPV vaccine–related answer. Results: The findings showed that both content length and vividness were positively related to the response behaviors of HPV vaccine–related answers. In addition, compared with answers under the question theme benefits and risks, answers under the question theme vaccination experience received fewer votes and answers under the theme news opinions received more votes but fewer comments. The effects of characteristics of contributors were also supported, suggesting that answers from a male contributor with more followers and no professional identity would attract more votes and comments from community members. The significant interaction effect between content and context features further showed that long and vivid answers about HPV vaccination experience were more likely to receive votes and comments of users than those about benefits and risks. Conclusions: The study provides a complete picture of the underlying mechanism behind response behaviors of users toward HPV vaccine–related answers on social Q&A websites. The results help health community organizers develop better strategies for building and maintaining a vibrant web-based community for communicating HPV vaccine knowledge.
ISSN: 1438-8871
DOI: 10.2196/29885
Schools: Wee Kim Wee School of Communication and Information 
Rights: ©Jinhui Li, Han Zheng, Xu Duan. Originally published in the Journal of Medical Internet Research (, 28.09.2021. This is an open-access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in the Journal of Medical Internet Research, is properly cited. The complete bibliographic information, a link to the original publication on, as well as this copyright and license information must be included.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:WKWSCI Journal Articles

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