Moody 2013a.

Study characteristics
Methods	RCT with individual participants, USA
Participants	Paediatric oncology staff (50% nurses, 20% physicians); Experimental 23 Control 24; Men: Experimental 30% Control 8%; Age: not reported; stated to be equal; Experience > 10 years: Experimental 48% Control 46%
Interventions	1) Experimental: 8 weeks of didactic and experiential mindfulness education via a structured, skills‐training course delivered in a group setting at their hospital. The course included 1 initial 6‐hour session; 6 weekly 1‐hour follow‐up sessions; and a final 3‐hour wrap‐up session (15 hours total class time) 2) Control: No intervention
Outcomes	MBI; Perceived Stress Scale
Identification
Notes	Authors provided additional data: SDs of MBI at follow‐up: Experimental: EE: 7.67; DP: 3.54; PA 3.69 Control: EE: 6.39; DP: 4.59; PA: 5.27 MBI‐EE included in analysis 1.1
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Using a computer‐generated random numbers schema in blocks of ten
Allocation concealment (selection bias)	Unclear risk	Participants were stratified according to their respective professions and randomised to a mindfulness‐based course (intervention) or no intervention (control)
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 were not blinded whereas outcomes are self‐reported.
Incomplete outcome data (attrition bias) All outcomes	Low risk	All participants reported outcomes
Selective reporting (reporting bias)	Low risk	All outcomes stated in the 'Methods' section reported.
Other bias	Low risk	We did not find any indications of other sources of bias.