Duan 2000.

Methods	Setting: Los Angeles, USA. Recruitment: 30 churches. Recruitment of women was achieved through announcements during services, meetings and events, special open houses and recruitment events. Randomisation: RCT 2 arm. There was no clear definition of peer support, however study met the inclusion criterion of using peers that shared one or several key characteristics of the target population. Peer training: A survey firm trained and supervised peer volunteers.
Participants	813 women aged 40 to 80 years.
Interventions	Intervention: One session of telephone counselling was conducted annually for 2 years by trained peer counsellors. The counselling was individualised to address barriers. Women were informed about their risk status and about breast cancer prevalence rates. They were also encouraged to ask their physicians for a referral and information about convenient screening facilities. Thus both educational and behavioural goals were embedded in the intervention. Caller: Calls were made by peer supporters. Control group: No intervention.
Outcomes	Physical health outcomes: none reported. Psychological health outcomes: none reported. Behavioural health outcomes: Mammography usage ‐ self report (question developed for use in study (not validated)). Social health outcomes: none reported. Impact on participants: none reported. Impact on peer supporter: none reported. Method of assessing outcome measures: phone survey
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Adequate sequence generation?	Unclear risk	Unclear.
Allocation concealment?	Unclear risk	B ‐ Unclear.
Blinding? Participants	Unclear risk	Unclear.
Blinding? Providers	Unclear risk	Unclear.
Blinding? Outcome assessors	Unclear risk	Unclear.
Blinding? Data analysts	Unclear risk	Unclear.
Incomplete outcome data addressed? All outcomes	Unclear risk	Intention‐to‐treat analysis ‐ not stated.
Free of selective reporting?	Low risk	All outcomes reported.