نبذة مختصرة : Background COVID-19 has spread around the world and has increased the public’s need for health information in the process. Meanwhile, in the context of lockdowns and other measures for preventing SARS-CoV-2 spread, the internet has surged as a web-based resource for health information. Under these conditions, social question-and-answer communities (SQACs) are playing an increasingly important role in improving public health literacy. There is great theoretical and practical significance in exploring the influencing factors of SQAC users’ willingness to adopt health information. Objective The aim of this study was to establish an extended unified theory of acceptance and use of technology model that could analyze the influence factors of SQAC users’ willingness to adopt health information. Particularly, we tried to test the moderating effects that different demographic characteristics had on the variables’ influences. Methods This study was conducted by administering a web-based questionnaire survey and analyzing the responses from a final total of 598 valid questionnaires after invalid data were cleaned. By using structural equation modelling, the influencing factors of SQAC users’ willingness to adopt health information were analyzed. The moderating effects of variables were verified via hierarchical regression. Results Performance expectation (β=.282; P Conclusions SQAC users’ willingness to adopt health information was evidently affected by multiple factors, such as performance expectation, social influence, and facilitating conditions. The structural equation model proposed in this study has a good fitting degree and good explanatory power for users’ willingness to adopt health information. Suggestions were provided for SQAC operators and health management agencies based on our research results.
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