Table 3.

Mediation analyses (n = 136¹).

Model	Mediator	a	b	Total effect c	Direct effect c’	Unique indirect effect a*b (BC 95% CI)	MacKinnon effect size
Prolonged grief
Single mediation	UGRS total	−0.14**	0.79***	−0.22***	−0.11**	−0.11* (−0.20, −0.03)	.50
Multiple mediation	UGRS counterfactuals	−0.02	0.16		−0.09**	<-0.01 (−0.03, 0.01)	.59
	UGRS relationship	−0.03*	1.18***			−0.03* (−0.07, −0.01)
	UGRS injustice	−0.03*	1.73***			−0.05* (−0.11, −0.01)
	UGRS meaning	−0.04***	0.90**			−0.04* (−0.08, −0.01)
	UGRS reactions	−0.02	0.15			<-0.01 (−0.03, 0.01)
Depression
Single mediation	UGRS total	−0.14**	0.51***	−0.25***	−0.17***	−0.07* (−0.13, −0.03)	.32
Multiple mediation	UGRS counterfactuals	−0.02	0.39		−0.16***	−0.01 (−0.05, 0.01)	.36
	UGRS relationship	−0.03*	0.85*			−0.02* (−0.07, <-0.01)
	UGRS injustice	−0.03*	0.05			<-0.01 (−0.04, 0.03)
	UGRS meaning	−0.04***	1.02*			−0.04* (−0.10, −0.01)
	UGRS reactions	−0.02	0.30			−0.01 (−0.04, 0.01)
Posttraumatic stress
Single mediation	UGRS total	−0.14**	0.75***	−0.34***	−0.23***	−0.11* (−0.19, −0.03)	.32
Multiple mediation	UGRS counterfactuals	−0.02	0.34		−0.22***	−0.01 (−0.05, 0.01)	.35
	UGRS relationship	−0.03*	1.04*			−0.03* (−0.09, <-0.01)
	UGRS injustice	−0.03*	1.02*			−0.03* (−0.10, <-0.01)
	UGRS meaning	−0.04***	0.94			−0.04* (−0.10, <-0.01)
	UGRS reactions	−0.02	0.51			−0.01 (−0.05, 0.01)

Note. ¹ = one participant did not fill in the date of the disappearance of his/her loved one and was therefore excluded from the mediation analyses; UGRS = Utrecht Grief Rumination Scale; a = the effect of X on M while controlling for the covariates; b = the effect of the mediator on Y, while controlling for X, other mediators, and covariates; c = the effect of X on Y; c’ is the direct of X on Y while controlling for the mediator(s) and covariates; BC 95% CI = Bias corrected bootstrap confidence intervals (5000 resamples); * p < .05; ** p < .01; *** p < .001.