Buckelew 1998.

Methods	RCT; 4 arms; assessed at pre‐treatment, post‐treatment, 3 months, 1 year, 2 years
Participants	End of treatment n = 109 Start of treatment n = 119 Sex: 108 F, 11 M Mean age = 44 (SD 10) Source = mainly community Diagnosis = fibromyalgia Mean years of pain = 11.5
Interventions	"Biofeedback + relaxation + exercise" "Biofeedback + relaxation" "Exercise" "Education attentional control"
Outcomes	Primary pain outcome: no data available Primary disability outcome: no data available Primary mood outcome: no data available Catastrophising outcome: no data available Arthritis Impact Measurement Scale: Physical Activity subscale (AIMS) Symptom Checklist (SCL‐90R) distress Center for Epidemiologic Studies Depression Scale (CES‐D) Arthritis Self‐Efficacy Scale Sleep rating 0 to 12 Tender Point Index Myalgic score Physician's VAS rating of disease severity Keefe & Block Pain Behaviour: observation
Notes	No data Yates quality scale: total quality = 20/35, design quality = 15/26, treatment quality = 5/9
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	High risk	“randomly assigned"
Allocation concealment (selection bias)	High risk	Not reported
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	Attrition partially reported and did not differ across groups; no test for differences
Selective reporting (reporting bias)	Low risk	Fully reported
Blinding of outcome assessment (detection bias) All outcomes	Low risk	Subjects examined by physician unaware of treatment conditions and with no other contact with subjects