Table 2. The total effects, total indirect effects, simple indirect effects, and direct effects in the APIMeM in patients with heart failure and their nearest relatives.

Effect		Coefficient	Label
Actor effect (Individual’s perceived social support→Individual’s family functioning)
Patient	Total effect	aA1bA1 + aP2bP1 + c′A1	Patient actor total effect
	Total IE	aA1bA1 + aP2bP1	Patient actor total IE
	Actor–actor simple IE	aA1bA1	Patient actor–actor IE
	Partner–partner simple IE	aP2bP1	Patient partner–partner IE
	Direct effect	c′A1	Patient actor direct effect
Nearest relative	Total effect	aA2bA2 + aP1bP2 + c′A2	Nearest relative actor total effect
	Total IE	aA2bA2 + aP1bP2	Nearest relative actor total IE
	Actor–actor simple IE	aA2bA2	Nearest relative actor–actor IE
	Partner–partner simple IE	aP1bP2	Nearest relative partner–partner IE
	Direct effect	c′A2	Nearest relative actor direct effect
Partner effect (Individual’s perceived social support→Partner’s family functioning)
Patient	Total effect	aA2bP1 + aP1bA1 + c′P1	Patient partner total effect
	Total IE	aA2bP1 + aP1bA1	Patient partner total IE
	Actor–partner simple IE	aA2bP1	Patient actor–partner IE
	Partner–actor simple IE	aP1bA1	Patient partner–actor IE
	Direct effect	c′P1	Patient partner direct effect
Nearest relative	Total effect	aA1bP2 + aP2bA2 + c′P2	Nearest relative partner total effect
	Total IE	aA1bP2 + aP2bA2	Nearest relative partner total IE
	Actor–partner simple IE	aA1bP2	Nearest relative actor–partner IE
	Partner–actor simple IE	aP2bA2	Nearest relative partner–actor IE
	Direct effect	c′P2	Nearest relative partner direct effect

Note: APIMeM, actor–partner interdependence mediation model; a, direct effect of perceived social support on family health; b, direct effect of family health on family functioning; c′, direct effect of perceived social support on family functioning; A, actor effect; P, partner effect; IE, indirect effect; 1, patient; 2, nearest relative.