3.1.3 Research directions

Every article has multiple research directions, but after statistically ranking, the top 10 directions were: healthcare science and service, computer science, medical informatics, engineering, public environmental occupational health, telecommunications, psychology, general internal medicine, and information science library science. In addition, these articles also involve some elements of clinical areas such as nursing, cancer treatment, pharmacy, and science and technology development (Table 3). The top four research directions are healthcare science and services, computer science, medical informatics, and engineering, accounting for more than 100%, which means all the literature is concerned with the four research directions, so it is suggested that these four research directions are the theoretical basis of Ehealth research.
