 As a function of the regulatory process, a majority of ePRO questionnaires undergo the linguistic validation process.When the data is captured for a clinical trial, the data is considered a form of Electronic Source Data

The two main methods currently used for ePRO are computers/Smartphones and telephone systems

"Computers" are most often touch-screen devices, ranging from wearables, hand-held devices and smartphones, through iPads and other Tablet computers.The smaller devices are often used as electronic diaries, designed to be used for symptom reporting on a daily basis.