Functional and Nonfunctional Requirements of Virtual Clinic Mobile Applications: A Systematic Review.

Introduction: The Virtual Clinic Mobile Application (VCMA) is a valuable tool for managing and remotely monitoring patients with various medical conditions. It can alleviate the strain on outpatient services and offer follow-up options for patients who do not require a physical examination. A thorough understanding of recent literature can assist in identifying suitable functionalities for new development and future improvement of current applications (apps). This review study is aimed at identifying functional and nonfunctional requirements for VCMA. Methods: This study conducted a systematic search using databases such as PubMed, Scopus, ISI Web of Science, Science Direct, ProQuest, and IEEE to gather requirements of VCMA articles published in English from the inception of the databases up to April 2022. Out of a total of 1223 articles, 76 met the inclusion criteria. These articles were then analyzed using conventional content analysis to extract and categorize their requirements. Results: Two main themes and 8 subthemes in terms of VCMA requirements were extracted as follows: (1) functional requirements with 3 subthemes (demographic data documentation, health record, general features of the user interface (UI)); (2) nonfunctional requirements with 5 subthemes (usability, accessibility, compatibility, efficiency, and security). Conclusion: The findings highlight the importance of mHealth solutions for virtual care and the need for the development of apps based on the extracted functional and nonfunctional requirements for VCMA; however, controlled trials are necessary. It is recommended that transparent reporting of mHealth interventions be prioritized to enable effective interpretation of the extracted data.