Development and validation of a multi-domain multimorbidity resilience index for an older population: results from the baseline Canadian Longitudinal Study on Aging

Table 1 Total Resilience Scale Items, Values and Calculation

Item	Survey Question	Responses	Value	Score Calculation
Summary Performance Score		Lowest quartile	0	A
		Second lowest quartile	3.3
		Second highest quartile	6.7
		Highest quartile	10
OARS ADL Scale		Lowest quartile	0	B
OARS ADL Scale		Remainder	10	B
OARS Instrumental ADL Scale		Lowest quartile	0	C
OARS Instrumental ADL Scale		Remainder	10	C
Functional Resilience (FR)		Derived interval scale		(A + B + C) / 3 = FR
Satisfaction with Life Scale		Lowest quartile	0	D
		Second lowest quartile	3.3
		Second highest quartile	6.7
		Highest quartile	10
Center for Epidemiologic Studies Depression Scale		Highest quartile	0	E
		Second highest quartile	3.3
		Second Lowest quartile	6.7
		Lowest quartile	10
Kessler Psychological Distress Scale		Highest quartile	0	F
		Second highest quartile	3.3
		Second lowest quartile	6.7
		Lowest quartile	10
Psychological Resilience (PR)		Derived interval scale		(D + E + F) / 3 = PR
MOS Social Support Total Scale		Lowest quartile	0	G
		Second lowest quartile	3.3
		Second highest quartile	6.7
		Highest quartile	10
Loneliness	How often did you feel lonely in the past week?	All of the time (5–7 days)	0	H
		Occasionally (3–4 days)	3.3
		Some of the time (1–2 days)	6.7
		Rarely or never (< 1 day)	10
Social Participation	Frequency of participation in family or friends activities out of the household	Never	0	I
		At least once a year	2.5
		At least once a month	5.0
		At least once a week	7.5
		At least once a day	10
Social Resilience (SR)		Derived interval scale		(G + H + I) / 3 = SR
Total Resilience (TR)		Derived interval scale		(FR + PR + SR)/3= TR

ISSN: 1471-2318