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Social networking sites and online communities are used by billions of people globally. It is important to understand the participation in these collaborative platforms and the roles different participants play. In this study, we examine the roles both local and global opinion leaders play and their influence on the community using content related to Covid mental health from Reddit. We employed social network analysis to identify opinion leaders based on their network position and connections, and we used sentiment analysis and econometric models to examine their impact on online health community participation. Our study reveals that global opinion leaders have more influence on thread participation than local opinion leaders. In addition, negative emotions expressed encourage more participants’ involvement in online health community discussion. [ABSTRACT FROM AUTHOR]

This paper examines the factors that affect clinician satisfaction with electronic health records (EHR) vendors that provide in-house and cloud-based solutions. The study is concerned with the organizational level of different healthcare organizations. The model combines the IS Success model and the Task Technology Fit model, to best fit the health information systems. Five research hypotheses derived from the model and are going to be empirically tested using a field survey of EHR systems characteristics and its influence on the organization's tasks achievement and mission alignment. [ABSTRACT FROM AUTHOR]

Communication in virtual health communities (VHCs) is characterized by convenience, non-judgmental interactions, and anonymity, and provides social support. Patient's engagement and interactions in online health communities may enhance patient's knowledge of health conditions, treatments, and health selfmanagement activities. Moreover, VHCs could benefit healthcare management through understanding patients' needs and preferences to build a patient-centered e-health system. Although engagement in VHCs is voluntary, it varies in quality and quantity. The privacy concern of personal information and identity disclosure of people with stigmatized illnesses could be an obstacle for participation and knowledge sharing in the VHCs. The study draws on the literature of virtual communities, social media engagement and public health communication. The study explains the dual dimensions of engagement in VHCs, which includes the quality and quantity of engagement. In addition, it addresses the stigmatization and privacy concerns of individuals and their impact on members' engagement along with the reciprocity and homophily factors. The theoretical framework proposed in this paper contribute to the literature of health informatics, participation and interaction in social media, and information privacy. Furthermore, the proposed model can be used as a foundation for future empirical research to better understand communication in virtual health communities. And thus improve engagement and expand it to include communication between physicians and patients to enhance the quality of care. [ABSTRACT FROM AUTHOR]