The article investigates the intentional use of a Web-based Health Information Service (WBHIS) through multi-factors influencing the use of a national, MyHEALTH Portal (MHP). The study utilised an online web-survey incorporates three interrelated aspects of investigation; acceptance influence, socio-cognitive, and software engineering factors (user interface and data quality), to investigate deeper on Malaysian health consumers’ intent to adopt the portal. Findings have shown health consumers’ intention to use MHP is positively influenced by the positive behavioural attitude of health consumers’ towards the portal. The study also supported the significant role played by software engineering factors; user interface design and data quality towards health consumers’ attitude of the portal. The results would assist Malaysia Health Education Division in gaining better insights into the design of a well-accepted WBHIS where specifically, the findings would improve the presence and functions of the MHP. This effort is evidently significant in helping the country to reach the 11th Malaysia Plan through its strategy to encourage health awareness and healthy lifestyle activities among its citizens.
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