Huet 2011.

Study characteristics
Methods	RCT. 2 arms.
Participants	Number of children: 15 control, 14 treatment Sex of children: 16 M, 13 F Age range of children: 5 ‐ 12 years Mean age of children: not reported (median = 8 years and 9 years) Needle procedure: local dental anesthetic Diagnosis of child: none Inclusion criteria: not reported Exclusion criteria: not reported Setting: Department of Pediatric Dentistry at Rennes University Hospital, France
Interventions	1. Hypnosis: Hypnosis followed the 3‐step Ericksonian procedure and was directed by a trained hypnotherapist. Hypnotic induction began in the dentist’s chair and focused on images, suggestions, and stories of interest to the child identified during an initial interview. The hypnotherapist spoke throughout the dental anesthesia and treatment, incorporating aspects of the intervention. 2. Standard care control: Children underwent the same procedures without hypnosis. The initial interview included reassuring explanations about the usual protocol.
Outcomes	Pain measure: Child self‐report: VAS 0 ‐ 10 Modified Objective Pain Score (MOPS) (0 ‐ 10) Distress measure: Modified Yale preoperative anxiety scale (mYAPS) at time of dental anesthesia Adverse events: none mentioned
Notes	Study dates: over a 3‐month period with year not reported Funding: none stated Conflicts of interest: none declared
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Quote: "randomly assigned by lottery" (p.426)
Allocation concealment (selection bias)	Unclear risk	Insufficient information to permit judgment of 'low' or 'high' risk
Blinding of participants and personnel (performance bias) All outcomes	High risk	Study participants and personnel were not blinded
Blinding of outcome assessment (detection bias) All outcomes	High risk	No blinding of outcome assessment
Incomplete outcome data (attrition bias) All outcomes	Low risk	Missing data minimal and unlikely to be related to true outcome
Selective reporting (reporting bias)	High risk	One or more outcomes of interest are reported incompletely
Other bias	High risk	Multiple potential sources of bias related to study design and other problems