Section of Behavioral Sciences, Division of Medical Oncology, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, United States.
The Edward R Murrow College of Communication, Washington State University, Pullman, WA, United States.
J Med Internet Res. 2021 Feb 25;23(2):e19134. doi: 10.2196/19134.
Empirical research has demonstrated that people frequently use social media for gathering and sharing online health information. Health literacy, social media use, and self-efficacy are important factors that may influence people's health behaviors online.
We aimed to examine the associations between health literacy, health-related social media use, self-efficacy, and health behavioral intentions online.
We conducted a cross-sectional survey of adults 18 years and older (n=449) to examine predictors of health-related behavioral intentions online including health literacy, social media use, and self-efficacy in China using 2 moderated mediation models. Mediation and moderation analyses were conducted.
Self-efficacy mediated the effects of health literacy (B=0.213, 95% CI 0.101 to 0.339) and social media use (B=0.023, 95% CI 0.008 to 0.045) on health behavioral intentions on social media. Age moderated the effects of health literacy on self-efficacy (P=.03), while previous experience moderated the effects of social media use on self-efficacy (P<.001).
Health literacy and health-related social media use influenced health behavioral intentions on social media via their prior effects on self-efficacy. The association between health literacy and self-efficacy was stronger among younger respondents, whereas the association between health-related social media use and self-efficacy was stronger among those who previously had positive experiences with health information on social media. Health practitioners should target self-efficacy among older populations and increase positive media experience related to health.
实证研究表明，人们经常使用社交媒体来收集和分享在线健康信息。健康素养、社交媒体使用和自我效能感是可能影响人们在线健康行为的重要因素。
我们旨在检验健康素养、与健康相关的社交媒体使用、自我效能感与在线健康行为意向之间的关联。
我们对 18 岁及以上的成年人（n=449）进行了横断面调查，以检验健康相关行为意向在线的预测因素，包括健康素养、社交媒体使用和自我效能感，在中国使用了 2 个调节中介模型。进行了中介和调节分析。
自我效能感中介了健康素养（B=0.213，95%CI 0.101 至 0.339）和社交媒体使用（B=0.023，95%CI 0.008 至 0.045）对社交媒体上健康行为意向的影响。年龄调节了健康素养对自我效能感的影响（P=.03），而先前的经验调节了社交媒体使用对自我效能感的影响（P<.001）。
健康素养和与健康相关的社交媒体使用通过对自我效能感的先前影响来影响社交媒体上的健康行为意向。在年轻的受访者中，健康素养和自我效能感之间的关联更强，而在那些之前对社交媒体上的健康信息有积极经验的人中，与健康相关的社交媒体使用和自我效能感之间的关联更强。健康从业者应该针对年龄较大的人群提高自我效能感，并增加与健康相关的积极媒体体验。
