TABLE 2.

Search term development

Question subcomponents	Family	People with dementia	Communication
Search terms	Family	Dementia	Communication
	Family members	Alzheimer's	interaction
	Family unit	Vascular dementia	conversation
	Family relations
	Family network	Frontotemporal dementia	Interpersonal communication
	Family system
		Semantic dementia	Verbal communication
	Family carer
	Family caregivers	Lewy body dementia	Non‐verbal communication
	Carer*
	Caregiver*
	Adult‐children	Primary progressive aphasia	Discourse
	Children
	Grandchildren
		Young onset dementia
		Early onset dementia

Note: The following terms were searched across the four databases: famil* OR ‘family members’ OR ‘family unit’ OR ‘family system’ OR ‘family network’ OR ‘family relations’ OR (‘family carers’) OR carer* OR caregiver* OR (‘family caregiver’ OR ‘family caregivers’) OR ‘adult‐children’ OR children OR grandparent* OR grandchild*) AND if(dementia OR alzheimer* OR ‘vascular dementia’ OR ‘lewy body dementia’ OR ‘frontotemporal dementia’ OR ‘semantic dementia’ OR ‘primary progressive aphasia’ OR ‘young onset dementia’ OR ‘early onset dementia’) AND if (communicat* OR interaction OR conversation OR ‘interpersonal communication’ OR ‘verbal communication’ OR ‘non‐verbal communication’ OR discourse. The search was conducted in December 2020.