Table 5.

Process evaluation with data collection time-points

Implementation outcome	Measurement	Dressing change time point			Source of data (measurement tool)	Assessor	Dressing change
		Pre	Mid	Post
Reach	Rate of families willing to participate out of those approached for participation	x			Report	Hypnotherapist	1st dressing change
Acceptability	Parents’ and children’s beliefs/views on hypnotherapy	x			Field notes, semi-structured pre-hypnosis interviewa
	Children’s level of perceived self-efficacy	x			1–10 Likert scale
	Children’s level of positive therapy expectations	x			1–10 Likert scale
	Satisfaction of parents and children with suggestibility screening, involuntariness measures, and pre-hypnosis interview			x	Satisfaction NRSb
	Satisfaction of parents, children, and clinicians with the hypnotherapeutic session			x	Satisfaction NRSb		Each dressing change
	Families’ and clinicians’ likes, dislikes, recommendations, and perceived burden of required time and effort regarding hypnotherapeutic sessions			x	Semi-structured interviewa and field notes		Last dressing change
	Satisfaction of families with health outcomes measurements			x	Satisfaction NRSb
Effectiveness	Perceived benefits			x	Field notes, reports of children, parents, and clinicians
	Safety of hypnotherapy (rate, timing, duration, and severity of adverse events)		x	x			Each dressing change
	Health outcomes	(Refer to Table 6 for details)
Adoption	Rate of clinicians consenting to participate among those conducting dressing changes.	x			Report	Hypnotherapist	1st dressing change
Implementation: fidelity	Retention rate		x	x	Report on the rate of children completing the intervention		Each dressing change
	Fidelity in collecting data on health outcomes			x	Response rate in data collection forms (amount and type of missing data)
	Fidelity in delivering the intervention			x	Study-specific checklistc	Independent observer expert in clinical hypnosis
	Additional adaptations and modifications			x	Documentation of what, when, and how adaptations occurred
Feasibility	- Adequacy of resources (adequately working music player, calm space) - Presence/absence of interruption (s) - Time availability (sufficient for delivering study procedures) [31]	x	x	x	- Field notes - Intervention pre-recording	Hypnotherapist

^aFollowing permission from children and parents to audiotape the intervention

^bAdult participants (parents or clinicians) and children ≥ 8years will self-report their satisfaction; proxy reports will be obtained from parents for children < 8years

^cAn independent assessor (preferably hypnotherapist) will assess the fidelity of delivering the intervention through analysing pre-recordings using a study-specific checklist based on the intervention manual; % of core elements and non-core elements delivered will be reported