Lesions Learned from the Practice of Mobile Health Application Development

This fast abstract briefly discusses lessons learned in terms of how to overcome limitations of PDA devices, effectively capture requirements for mobile health application development and effectively re-engineer a desktop application on PDA. The limitation of PDA devices includes (1) small screen size, which limits textbased data entry, reporting and browsing; (2) limited storage space and slow processing, which requires effective and efficient coding generation; (3) security limitations and inadequate third party application support, which poses challenge for application development. The corresponding strategies addressing the above challenges are (1) providing check box, radio button, drop down list, text field, combo box based data entry and minimise textbased data entry, such as text area; (2) allocating as much as possible data storage, communication and computation tasks to the desktop system and minimise the function PDA component needs to handle, store data in file instead of database on PDA; (3) carefully selecting the device and implementation platform that supports development. To maximise the usability of PDA-based health application, the solution to be implemented on PDA ideally should be data management tasks with minimum textbased data entry and high frequency of recording. Challenges and solutions for software re-engineering from desktop system to PDA-based application is outlined based on one application developed for World Health Organisation. In this example, the complex task of communication among PDA-based application, desktop system and the existent desktop application EpiData is effectively handled through the utilisation of XML files. A dynamic tool ‘Questionnaire Designer’ provides a completely dynamic user interface generation tool that could easily be handled by end user. The design idea for this application sets up a model for mobile health application with adequate flexibility of handling changing data management needs of end users. Introduction An integral part of work practice for health care professionals is that they are always mobile, frequently being called upon and moving among clinics, hospitals, patient beds, wards and even patient homes. Therefore, there is a high demand for mobile health application that really suits the needs of information capture, transmission, storage and retrieval for mobile health care workers. The authors have two years development experience with mobile healthcare applications. This fast abstract will discuss lessons learned in terms of how to overcome limitations of PDA devices, effectively capture requirements for mobile solution and successfully reengineer a desktop application on PDA. Barriers posed by limitations of device for the development of PDA based mobile health