Table 2.

The set of prototypical intervention components is identified through the synthesis process.

	Intervention component and modality	Behaviour change techniques (BCTs)
C1	POSTER PROMPT for the Ward bathroom	Target: stroke survivors 7.1: Prompts/cues
C2	FACTSHEET Mouth care after Stroke. Given on admission to the stroke ward, at Mouth Care Mondays (C5) and at Stroke Groups (C13)	Target: stroke survivors and family carers 4.1 Instruction on how to perform the behaviour 5.1 Information about health consequences, 5.3 information about social/environmental consequences; 6.1 Demonstration of behaviour [if follow QR link] [2.2—feedback on behaviour—advised on how to gain feedback]
C3	WEEK 1 MOUTH CARE CHART Bedside chart. Tear-off mini brushing-packs for the first week on the stroke ward.	Target: stroke survivors and family carers 2.3 Self-monitoring of behaviour 7.1 Prompts/ cues 12.5 Adding objects to environment;
C4	WEEK 2 MOUTH CARE CHART Bedside chart.	Target: stroke survivors and family carers 2.3 Self-monitoring of behaviour 7.1 Prompts/ cues 12.5 Adding objects to environment;
C5	MOUTH CARE MONDAYS Carers’ weekly drop-in—on the ward. One-hour draft agenda (and poster C6)	Target: family carers 3.1 Social support (unspecified) 4.1 Instruction on how to perform the behaviour; 5.1 Information about health consequences, 5.3 Information about social/environmental consequences; 6.1 Demonstration of the behaviour 8.1 Behavioural practice [if feasible] 12.5 Adding objects to the environment [if feasible to provide useful equipment]
C6	MOUTH CARE MONDAYS Poster for the ward’s notice-board and/or Family Room	Target: family carers. Target behaviour: attending Mouth Care Mondays. 4.1 Instruction on how to perform the behaviour 7.1 Prompts/cues
C7	EPR CHANGE 1 (software fix) For action by Occupational Therapists	Target: Occupational Therapist Target behaviour: check for independent oral self-care 2.3 Self-monitoring of behaviour 7.1 Prompts/cues
C8	DENTAL VOUCHER Issued at discharge, it secures a double dental appointment for the named recipient, ensuring they aren’t rushed.	Target: stroke survivors. 7.1 Prompts/cues Target: dental practices. 10.1 Material incentive (behaviour) 10.2 Material reward (behaviour)
C9	EPR CHANGE 2 (software fix) For action by Hospital-based Social Workers	Target: Social Worker. Target behaviour: check for independent oral self-care 2.3 Self-monitoring of behaviour 7.1 Prompts/cues
C10	TRAINING ON MOUTH CARE—FOR PROFESSIONAL CAREGIVERS	Target: professional caregivers. Likely to include: 4.1 Instruction on how to perform the behaviour; 5.1 Information about health consequences, 5.3 information about social/environmental consequences; 6.1 Demonstration of the behaviour 8.1 Behavioural practice
C11	PEER-TO-PEER FILMS Hopeful online messages, shared by stroke-survivors	Target: stroke survivors Likely BCTs (depending on final content of films): 9.1 Credible source 15.1 Verbal persuasion about capability 16.3 Vicarious consequences 6.1 Demonstration of the behaviour
C12	MEMORY STICKERS For the home environment—given at discharge	Target: stroke survivors 7.1—Prompts/cues
C13	EXPERT INPUT AT STROKE GROUPS Once or twice a year	Targets: stroke survivors and family carers 3.1 Social support (unspecified) 4.1 Instruction on how to perform the behaviour 5.1 Information about health consequences, 5.3 Information about social/environmental consequences; 6.1 Demonstration of the behaviour 8.1 Behavioural practice [if feasible] 12.5 Adding objects to the environment [if feasible to provide useful equipment]

Note. The target behaviours are usually those originally specified: ‘cleaning teeth/mouth’ and ‘accessing dental care’. Additional, intermediate target behaviours (identified during the research) are indicated where relevant. BCTs are numbered according to Behaviour Change Technique Taxonomy (v1) (Michie et al. 2013).