Kraaimaat 1995.

Methods	RCT; 3 arms; assessed at pre‐treatment, post‐treatment, 6 months
Participants	End of treatment n = 52 Start of treatment n = 58 Sex: 52 F, 25 M (from the 77 who agreed to participate) Mean age = 57.0 (SD 12.7) Source = rheumatology clinics Diagnosis = rheumatoid arthritis Mean years of pain = 15.6
Interventions	"cognitive behavioural therapy" "occupational therapy" "waiting list"
Outcomes	Primary pain outcome: IRGL pain Primary disability outcome: IRGL function (Reversed) Primary mood outcome: IRGL depression Catastrophising outcome: none Invloed van Reuma op Gezondheid en Leefwijze (IRGL): function Invloed van Reuma op Gezondheid en Leefwijze (IRGL): self care Invloed van Reuma op Gezondheid en Leefwijze (IRGL): pain Invloed van Reuma op Gezondheid en Leefwijze (IRGL): anxiety Invloed van Reuma op Gezondheid en Leefwijze (IRGL): depression                         Invloed van Reuma op Gezondheid en Leefwijze (IRGL): potential support Invloed van Reuma op Gezondheid en Leefwijze (IRGL): actual support Invloed van Reuma op Gezondheid en Leefwijze (IRGL): mutual visits
Notes	CBT versus active, post‐treatment and follow‐up: analyses 1.1, 1.2, 1.3, 2.1, 2.2, 2.3 CBT versus TAU, post‐treatment and follow‐up: N < 20 Yates quality scale: total quality = 21/35, design quality = 14/26, treatment quality = 7/9
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	Fully reported; several differences between dropouts and completers
Selective reporting (reporting bias)	Low risk	Fully reported
Blinding of outcome assessment (detection bias) All outcomes	High risk	Not reported