Thom 1999.

Methods	Cluster RCT Follow up: providers: DONE patients: NOT CLEAR Blinded assessment: DONE Baseline: DONE Reliable outcomes: NOT CLEAR Protection against contamination: DONE Overall quality: MODERATE
Participants	20 family practice physicians Country: USA Proportion of eligible providers who participated: 31% Family practitioners Academic/Teaching setting: NOT CLEAR Type of targeted behaviour: OTHER (building patients' trust in their physician) Complexity of targeted behaviour: HIGH
Interventions	1. CME: problem‐based, small group discussions with brief didactic presentations, viewing of videotaped patient encounters and role‐playing, 7 hrs 2. Control: NONE
Outcomes	Professional practice: no primary specified ‐ no baseline so cannot choose the highest? Patient: mean trust score Seriousness of outcome: HIGH
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment (selection bias)	Low risk	A ‐ Adequate