Falcao 2008.

Methods	RCT; 2 arms; assessed at pre‐treatment, post‐treatment, 3 months
Participants	End of treatment n = 51 Start of treatment n = 60 Sex: 60 F, 0 M Mean age = 45.7 (SD 2.3) Source = Rheumatology outpatients Diagnosis = fibromyalgia Mean years of pain = 3.6
Interventions	"Cognitive behavioral therapy" "Routine medical visits"
Outcomes	Primary pain outcome: VAS Primary disability outcome: FIQ (no data for SF‐36) Primary mood outcome: BDI Catastrophising outcome: none 1. Visual analogue scale for pain 2. Verbal improvement scale (5 categories) 3. Fibromyalgia Impact Questionnaire (FIQ) 4. SF‐36 physical capacity (function) 5. SF‐36 physical aspects (role) 6. SF‐36 pain 7. SF‐36 general health 8. SF‐36 vitality 9. SF‐36 social aspects 10. SF‐36 emotional aspects 11. SF‐36 mental health 12. Beck Depression Inventory (BDI) 13. Spielberger State‐Trait Anxiety Inventory (STAI State) 14. Number of paracetamol tablets
Notes	December 2009 search: analyses 3.1, 3.2, 3.3 Yates quality scale: total quality = 16/35, design quality = 14/26, treatment quality = 2/9
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	"Patients were randomized by drawing lots"
Allocation concealment (selection bias)	High risk	Not reported
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	Attrition partially reported; statement that dropouts were not different
Selective reporting (reporting bias)	Low risk	Fully reported
Blinding of outcome assessment (detection bias) All outcomes	Low risk	Evaluation by clinician blind to treatment allocation