Secondary Outcomes
Depressive, Anxiety, Work-related burnout, depressive symptoms
Depressive symptoms were measured using the PHQ-9 continuous scoring method, with scores ranging from 0 to 27 and cutoff points of 5, 10, 15, and 20 representing mild, moderate, moderately severe, and severe depressive symptoms, respectively [Anxiety symptoms were measured using the General Anxiety Disorder–7 (GAD-7) [Stress was measured using the Perceived Stress Scale [Well-being was measured using the 5-item World Health Organization Well-being Index (WHO-5) [Resilience was measured using the Brief Resilience Scale (BRS), a 6-item measure designed to assess the ability to recover from stress. The BRS has been shown to have good internal consistency and test-retest reliability [Daily life functioning was measured using the Assessment of Quality of Life 4-dimension version (AQoL-4D) [Work-related burnout was assessed using part 2 of the Copenhagen Burnout Inventory (CBI) [Work performance was assessed using the Health and Work Performance Questionnaire [At the 1-month follow-up, a range of questions were administered to elicit participant feedback on the app. Control participants answered the same questions, with wording changed to refer to the study “website” instead of “app.” Several of these questions were adapted from the Mobile Application Rating Scale [App use was measured by collecting the total app use data (combining challenge and toolbox activities). Intervention adherence was recorded as the number of unique challenges completed.