Dallocchio 2016.

Study characteristics
Methods	Study design: randomised controlled trial Study grouping: parallel group Adequate power (evidence of power calculation): none mentioned Allocation concealment method: none mentioned Blinding of outcome assessors: a single rater blinded to the aims of the study and the time evaluation (PMDRS) Check of blinding: none Duration of study: no information Randomisation method: block randomisation (size = 4 with balance combinations)
Participants	Baseline characteristics Intervention n: 10 Duration of symptoms: 20.7 (SD 10.5) months Age (mean): 33.7 (SD 7.9) years Sex (% woman): 60% Control n: 11 Duration of symptoms: 17.1 (SD 12.9) months Age (mean): 34.7 (SD 10.1) years Sex (% woman): 82% Overall n: 21 Inclusion criteria: people with functional movement disorder (conversion disorder, in accordance to DSM‐IV) Exclusion criteria: none mentioned Pretreatment: not assessed. No statistically significant differences apparent at baseline between groups.
Interventions	Intervention characteristics Intervention Description: CBT + APA (60‐minute sessions twice a week for 12 weeks) Length of treatment: 12 weeks Longest follow‐up after end of treatment: none Comedications/other treatments while in the study: none Control Description: CBT alone (90‐minute session once a week for 12 weeks) Length of treatment: 12 weeks Longest follow‐up after end of treatment: none Comedications/other treatments while in the study: none
Outcomes	Overall physical impact (PMDRS total score) (SD) Outcome type: continuous Mental state – anxiety (BAI) Outcome type: continuous Mental state – depression (HDSR) Outcome type: continuous Dropout Outcome type: dichotomous
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Block procedure (block size = 4 with balanced combinations).
Allocation concealment (selection bias)	Unclear risk	No information provided.
Blinding of participants and personnel (performance bias) All outcomes	High risk	Mentioned as single‐blind, but only the rater was blinded.
Blinding of outcome assessment (detection bias) All outcomes	Low risk	A single rater blinded to the aims of the study and time valuation completed the PMDRS in a randomised order.
Incomplete outcome data (attrition bias) All outcomes	Low risk	Dropouts were accounted for.
Selective reporting (reporting bias)	Unclear risk	No protocol available.
Other bias	Low risk	No apparent sources of bias.