West 2021.

Study characteristics
Methods	Study design: randomised controlled trial Study grouping: parallel group
Participants	Baseline Characteristics Experimental group: topic focused discussion Age (< 30, 31‐40, 41‐50, 51‐60, > 60)(%)): 1 (12), 24 (39), 17(27%), 15,(24%) 5 (8%) Sex (N (% female)): 27 (43%) Sample size : 62 Years of experience (mean ± SD): NR Control (no intervention) Age (< 30, 31‐40, 41‐50, 51‐60, > 60)(%)): 0(0%), 16(26%), 20(33%), 18(30%), 7(12%) Sex (N (% female)): 26 (43%) Sample size: 61 Years of experience (mean ± SD): NR Overall Age (< 30, 31‐40, 41‐50, 51‐60, > 60)(%)): NR Sex (N (% female)): 54 (43%) Sample size: 123 Years of experience (mean ± SD): NR Included criteria: NR Excluded criteria: NR Pretreatment: NR Compliance rate: NR Response rate: 21% Type of healthcare worker: physicians
Interventions	Intervention characteristics Experimental group: topic focused discussion Type of the intervention: 1. Intervention type 1 ‐ to focus one’s attention on the experience of stress Description of the intervention: Group discussions about several topics: organised into categories entitled “meaning in work/job satisfaction,” “teamwork/social support/collegiality/relationships/work‐life balance and integration,” and “personal strengths/problem‐solving/coping/resources for thriving and flourishing The number of sessions: 12 Duration of each session on average: 15 minutes & afterwards 45 minutes Duration of the entire intervention: 6 months Duration of the entire intervention short vs long: long Intervention deliverer : NR Intervention form: group Control (no intervention) Type of the intervention: No intervention 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 (lack of) Outcome type: ContinuousOutcome
Identification	Sponsorship source: NR Country: United States of America Setting: Hospital Comments: NR Authors name: Colin West Institution: Department of Quantitative Health Sciences Mayo Clinic, Rochester, MN; and the Division of Hematology, Email: west.colin@mayo.edu Address: Department of Medicine, Stanford University, Palo Alto, CA Time period: 2013‐2014
Notes	We kindly receivede the mean and SD for the primary outcome from author C. West MBI‐EE included in analysis 1.1 and 1.2.
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Quote: "Participants were randomized in concealed fashion into two arms via a computer‐ generated algorithm."
Allocation concealment (selection bias)	Low risk	Participants were randomized in concealed fashion into two arms via a computer‐ generated algorithm.
Blinding of participants and personnel (performance bias) All outcomes	High risk	Participants not blinded.
Blinding of outcome assessment (detection bias) All outcomes	High risk	Participants not blinded whereas outcomes are self‐reported.
Incomplete outcome data (attrition bias) All outcomes	Low risk	107 of the 123 randomized participants (87%) complete follow‐up data.
Selective reporting (reporting bias)	Low risk	Registation trial checked: NCT04466423. No indication of selective outcome reporting.
Other bias	Unclear risk	Compliance not reported.