Table 3.

Total, direct, and indirect effects in the APIMeM (n = 259).

	β	SE	95%CI	p
Actor effect
Patients
Total effect	0.082	0.028	(0.016, 0.128)	0.004
Total indirect effect	−0.009	0.008	(−0.020, 0.009)	0.248
Specific indirect effect 1: X1-M1-Y1	−0.012	0.007	(−0.025, 0.003)	0.096
Specific indirect effect 2: X1-M2-Y1	0.003	0.004	(−0.002, 0.015)	0.401
Direct effect	0.091	0.029	(0.019, 0.134)	0.001
Caregivers
Total effect	0.834	0.015	(0.825, 0.873)	<0.001
Total indirect effect	0.246	0.043	(0.263, 0.407)	<0.001
Specific indirect effect 1: X2-M1-Y2	0.135	0.028	(0.050, 0.126)	<0.001
Specific indirect effect 1: X2-M2-Y2	0.111	0.031	(0.191, 0.324)	<0.001
Direct effect	0.588	0.045	(0.433, 0.595)	<0.001
Partner effect
Patients
Total effect	0.905	0.021	(0.852, 0.927)	<0.001
Total indirect effect	−0.011	0.027	(−0.046, 0.068)	0.698
Specific indirect effect 1: X2-M1-Y1	−0.040	0.020	(−0.058, 0.011)	0.046
Specific indirect effect 1: X2-M2-Y1	0.029	0.023	(−0.026, 0.085)	0.204
Direct effect	0.915	0.035	(0.803, 0.953)	<0.001
Caregivers
Total effect	−0.035	0.032	(−0.061, 0.066)	0.273
Total indirect effect	0.053	0.019	(0.028, 0.104)	0.006
Specific indirect effect 1: X1-M1-Y2	0.041	0.015	(0.013, 0.057)	0.008
Specific indirect effect 1: X1-M2-Y2	0.012	0.010	(0.005, 0.060)	0.229
Direct effect	−0.088	0.025	(−0.109, −0.008)	0.001

APIMeM, actor-partner interdependence mediation model; β, standardized estimate; SE, standard error; CI, confidence interval; X1, patient’s perceived stress; X2, caregiver’s perceived stress; M1, patient’s social support; M2, caregiver’s social support; Y1, patient’s insomnia; Y2, caregiver’s social support. The boldface indicates p < 0.05.