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Objectives: Little is known about the platforms and functionalities of mobile-based personal health record (PHR) applications. The objective of this study was to investigate these two features of PHR systems. Methods: The unit of analysis wasgeneral hospitals with more than 100 beds. This study was based on a PHR survey conducted from May 1 to June 30, 2020and the National Health Insurance administrative data as of March 31, 2020. The study considered the platform, Androidand iPhone operation system (iOS), and types of functionalities of PHR systems. Among the 316 target hospitals, 103 hospitalshad adopted PHR systems. A logistic regression analysis was used. Results: This study found that 103 hospitals hadadopted mobile-based PHR systems for their patients. Sixty-four hospitals (62.1%) were adopting both Android and iOS, but36 (35.0%) and 3 (2.9%) hospitals were adopting Android only or iOS only, respectively. The PHR systems of hospitals adoptingboth platforms were more likely to have functions for viewing prescriptions, clinical diagnostic test results, and upcomingappointment status compared to those adopting a single platform (p < 0.001). The number of beds (odds ratio [OR] = 1.004;confidence interval [CI], 1.001–1.007; p = 0.0029) and the number of computed tomography systems (CTs) per 100 beds (OR= 6.350; CI, 1.006–40.084; p = 0.0493) were significantly associated with the adoption of both platforms. Conclusions: Morethan 60% of hospitals had adopted both Android and iOS platforms for their patients in Korea. Hospitals adopting both platformshad additional functionalities and significant association with the number of beds and CTs.
