Table 2.

Overview of measures.

Collected data and instrument			Outcome measures	Items, n	T0a	T1b	T2c
Demographic data of carers and persons with dementia
	Sociodemographic questions		Age, gender, etcd	15	xe	N/Af	N/A
Inclusion criteria
	Burden scale		Caregiver burden	1	x	N/A	N/A
	AD8g		Functional decline	8	x	N/A	N/A
Primary outcome
	PSSh		Perceived stress	14	x	x	x
Secondary outcomes
	Mental health
		CES-Di	Depression	20	x	x	x
		HADS-Aj	Anxiety	7	x	x	x
		ZBIk	Caregiver burden	12	x	x	x
	Mastery and sense of competence
		PMSl	Mastery	7	x	x	x
		RISm Elder Care Self-Efficacy Scale	Self-efficacy	10	x	x	x
		SSCQn	Sense of competence	2	x	x	x
	Attitude toward dementia and the care recipient
		ADQo	Approaches to dementia	11	x	x	x
	Treatment adherence, usage, and satisfaction
		SUSp	Usability	10	N/A	x	N/A
		Postlesson questions	Satisfaction	2 per lesson	N/A	x	N/A
		Analysis of platform data	Intervention usage	N/A	N/A	x	N/A

^aT0: baseline assessment.

^bT1: 3-month follow-up assessment.

^cT2: 6-month follow-up assessment.

^dDemographic data of carers: age, gender, marital status, number of children, children living at home, relationship with the person with dementia, level of education, months of caregiving, and average days per week providing care. Demographic data of persons with dementia: age, gender, marital status, living situation, and diagnosis.

^eThe questionnaire is included at the questionnaire battery for the different time points (T0, T1, T2), in opposition to N/A.

^fNot applicable.

^gAD8: Ascertain Dementia 8-item informant questionnaire.

^hPSS: Perceived Stress Scale.

ⁱCES-D: Centre for Epidemiological Studies Depression scale.

^jHADS-A: Hospital Anxiety and Depression Scale-Anxiety subscale.

^kZBI: Zarit Burden Interview.

^lPMS: Pearlin Mastery Scale.

^mRIS: relational self-efficacy, instrumental self-efficacy, and self-soothing efficacy.

ⁿSSCQ: Short Sense of Competence Questionnaire.

^oADQ: Approaches to Dementia Questionnaire.

^pSUS: System Usability Scale.