Tracking post-trauma psychopathology using mobile applications: A usability study.

Trauma exposure markedly increases risk for psychopathology including posttraumatic stress disorder (PTSD). Understanding the course by which PTSD develops after a traumatic event is critical to enhancing early intervention. Although prior work has explored the course of PTSD symptoms in the subsequent months, relatively few studies have explored the course of symptoms in the acute post-trauma period, defined as the 30 days after a traumatic event. A key challenge to conducting such studies is the lack of efficient means to collect data that does not impose significant burden on the participant during this time. The present study evaluated the use of a mobile phone application to collect symptom data during the acute post trauma period. Data was obtained from 23 individuals who experienced a Criterion A traumatic event and were recruited from the Emergency Department of a Level 1 Trauma Center. Participants completed 44.93% of daily assessments across a 30-day period. Responses rates were uncorrelated with PTSD symptoms or depression symptoms at 1-month and 3-month posttrauma. Participants reported that the surveys were moderately helpful and posed minimal burden. These findings suggest that mobile applications can be used to learn about the course of post-trauma recovery.