Mishra 2000.

Methods	RCT; 4 arms; assessed at pre‐treatment, post‐treatment
Participants	End of treatment n = 94 Start of treatment n = 94 Sex: 77 F, 7 M Mean age = 35.8 (SD 9.9) Source = pain or rehabilitation clinic and volunteer Diagnosis = temporomandibular joint disorder Mean years of pain = 7.0
Interventions	"Biofeedback" (BT) "Cognitive behavioural skills training" (CBT) "Cognitive behavioural skills training + biofeedback" "no treatment control"
Outcomes	Primary pain outcome: CPI pain index Primary disability outcome: none available Primary mood outcome: none available Catastrophising outcomes: none Characteristic Pain Index (CPI) pain severity 0 to 100                         Graded Chronic Pain Score Profile of Mood States total
Notes	CBT versus TAU, post‐treatment: analysis 3.1 BT versus TAU, post‐treatment: analysis 7.1 Yates quality scale: total quality = 19/35, design quality = 12/26, treatment quality = 7/9
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	High risk	"patients were assigned to group in a semi‐random fashion using the urn method of random assignment"
Allocation concealment (selection bias)	High risk	Not reported
Incomplete outcome data (attrition bias) All outcomes	High risk	Attrition not reported
Selective reporting (reporting bias)	High risk	Partially reported
Blinding of outcome assessment (detection bias) All outcomes	High risk	Not reported