West 2014.

Study characteristics
Methods	Study design: randomised controlled trial Study grouping: parallel group
Participants	Baseline characteristics Protected time with facilitated small group curriculum Age (mean ± SD): NR Sex (N (% female)): NR Sample size: NR Years of experience (mean ± SD): NR Control (protected time unstructured) Age (mean ± SD): NR Sex (N (% female)): NR Sample size: NR Years of experience (mean ± SD): NR Overall Age (mean ± SD): NR Sex (N (% female)): 25 (34%) Sample size: 74 Years of experience (mean ± SD): NR Included criteria: practising physicians in the Mayo Clinic Department of Medicine Excluded criteria: not specified Pretreatment: baseline characteristics were similar for both groups with no statistically significant differences observed. However, the intervention group had "slightly higher rates of high emotional exhaustion and overall burnout." P values for statistical significance are not provided in the paper. Compliance rate: NR Response rate: 13% Type of healthcare worker: physicians
Interventions	Intervention characteristics Protected time with facilitated small group curriculum Type of the intervention: Intervention type 4 ‐ Combination of interventions Description of the intervention: Quote: "Participants randomized to the intervention arm engaged in a facilitated small‐group curriculum administered at 1‐hour meetings occurring once every 2 weeks for 9 months, for a total of 19 sessions. The 37 intervention arm participants were divided into 4 small groups (8‐10 physicians each) with similar compositions by sex and specialty. Topics addressed during these sessions were organised into modules entitled“self,” “patient,” and “balance” and included meaning in work, personal and professional balance, medical mistakes, community, caring for patients, and other topics relevant to the work experiences of practising physicians. Each session followed the same general structure: (1) check‐in and welcome, (2) preparing the environment (eg, journaling and reflective exercise), (3) facilitated group discussion, (4) learned skills and solutions, and (5) check‐out and summary The number of sessions: 19 Duration of each session on average: 1 hour Duration of the entire intervention: 36 weeks Duration of the entire intervention short vs long: Long Intervention deliverer: "Practising internal medicine physicians with specific expertise in communication and teaching courses involving small‐group facilitation." Intervention form: Group Control (protected time unstructured) Type of the intervention: NA Description of the intervention: "Those in the control arm could schedule and use this hour of protected time in any manner they believed was most useful but did not participate in the formal curriculum." 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 Perceived Stress Scale (PSS) Outcome type: ContinuousOutcome
Identification	Sponsorship source: Mayo Clinic Program on Professionalism and Ethics and the Department of Medicine at Mayo Clinic, Rochester, USA. Country: USA Setting: One medical centre Comments: NR Authors name: Colin P. West Institution: Division of General Internal Medicine, Department of Medicine, Mayo Clinic Email: west.colin@mayo.edu Address: Division of General Internal Medicine, Department of Medicine, Mayo Clinic, 200 First St, Rochester, MN 55905, USA. Time period: 2010‐2012
Notes	We kindly receivede the mean and SD for the primary outcome from author C. West. PSS included in analysis 4.1 and 4.2.
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Quote: "Participants were randomized in a concealed fashion into 2 groups via a computer‐generated algorithm."
Allocation concealment (selection bias)	Low risk	Participants were randomized in a concealed fashion into 2 groups 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	Low response rate. 74 of the 565 eligible physicians participated (13%)
Selective reporting (reporting bias)	Low risk	Data we kindly received match trial registration: NCT01159977
Other bias	Low risk	No indication of other source of bias.