Medisauskaite 2019.

Study characteristics
Methods	Study design: randomised controlled trial Study grouping: parallel group
Participants	Baseline Characteristics Interventions about the psychology of burnout, stress, coping with patient death, and managing distress Age in years (mean ± SD): NR Sex (N (% female)): 14 (35.9%) Sample size: 39 Years of experience (mean ± SD): 23.90 (11.18) Control (no intervention) Age in years (mean ± SD): NR Sex (N (% female)): 28 (53.8%) Sample size: 52 Years of experience (mean ± SD): 24.54 (11.39) Overall Age in years (mean ± SD): NR Sex (N (% female)): 42 (46.2%) Sample size: 91 Years of experience (mean ± SD): 24.26 (11.25) Included criteria: doctors who currently practice medicine, have regular contact with patients Excluded criteria: NR Pretreatment: there were no significant differences between the two trial groups at baseline Type of healthcare worker: exclusively doctors Response rate: 89% Compliance rate: 78%
Interventions	Intervention characteristics Interventions about the psychology of burnout, stress, coping with patient death, and managing distress Type of the intervention: Intervention type 1 ‐ to focus one’s attention on the experience of stress Description of the intervention: We developed and piloted an intervention consisting of four modules. Module 1 taught doctors about stress, Module 2 taught doctors about burnout, Module 3 taught doctors about coping with patient death, and Module 4 taught doctors about methods of managing distress. The number of sessions: NR Duration of each session on average: NR Duration of the entire intervention: 7 days Duration of the entire intervention short vs long: short Intervention deliverer: NR Intervention form: NR Control (no intervention) Type of the intervention: NA Description of the intervention: NA The number of sessions: NA Duration of each session on average: NA Duration of the entire intervention: NA Duration of the entire intervention short vs long: NA Intervention deliverer: NA Intervention form: NA
Outcomes	Maslach Burnout Inventory ‐ Emotional exhaustion Outcome type: ContinuousOutcome Maslach Burnout Inventory ‐ Depersonalisation Outcome type: ContinuousOutcome Maslach Burnout Inventory ‐ Personal accomplishment Outcome type: ContinuousOutcome General Anxiety Disorder Outcome type: ContinuousOutcome Scale: The General Anxiety Disorder‐7 (Spitzer et al. 2006)
Identification	Sponsorship source: The RCT was not funded or determined by Focus Games or any organization involved with the app/board game. Country: United Kingdom Setting: Among nine randomly selected NHS trusts, 9 royal colleges of medicine, and the British Medical Association (BMA) Comments: NR Authors name: Asta Medisauskaite Institution: Research Department of Medical Education Email: a.medisauskaite@ucl.ac.uk Address: UCL Medical School Room GF/644, Royal Free Hospital, NW3 2PF. Time period: From July to November 2016
Notes	MBI‐EE included in analysis 1.1. GAD included in analysis 1.4.
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Quote: "Qualtrics software randomly assigned doctors to one of 5 trial groups:"
Allocation concealment (selection bias)	Low risk	Quote: "Blindly to the researchers, Qualtrics software randomly assigned doctors to one of 5 trial groups:"
Blinding of participants and personnel (performance bias) All outcomes	Low risk	Quote: "doctors were randomly and blindly assigned to one of 5 trial groups."
Blinding of outcome assessment (detection bias) All outcomes	Low risk	Quote: "The trial group was manipulated between‐subjects such that doctors were randomly and blindly assigned to one of 5 trial groups."  Outcomes are self‐reported.
Incomplete outcome data (attrition bias) All outcomes	High risk	Quote: "2.2.4. Sample" Loss to follow‐up: 25% intervention; 27% control
Selective reporting (reporting bias)	Unclear risk	No trial registration, nor did we find one online.
Other bias	Low risk	No indication of other bias.