Table 2.

Actor-Partner-Independence Model (APIM) investigating actor and partner effects of post-traumatic stress symptoms (PTSS-10) and health-related quality of life (EQ-5D-3L) in three different age groups of patients with chronic critical illness and their partners (n = 70). Patients and their partners were investigated within up to 6 months after the transfer from acute care ICU to post-acute ICU

Effect	Patients				Partners
	β	95% CI	t	P	β	95% CI	t	P
PTSS-10 score
Age group 1 (≤ 57 years)
Actor effect	− .730	− 1.030, − .430	− 5.062	< .001***	− .705	− .980, − .431	− 5.345	< .001***
Partner effect	.295	− .044, .634	1.810	.085	− .250	− .493, − .008	− 2.145	.044*
− 2 log likelihood	105.258
Bayes criterion	116.471
Age group 2 (> 57, < 63 years)
Actor effect	− .497	− .990, − .004	− 2.108	.049*	− .109	− .662, .443	− .413	.684
Partner effect	− .200	− .641, .240	− .951	.353	.197	− .422, .816	.665	.514
− 2 log likelihood	129.108
Bayes criterion	140.020
Age group 3 (≥ 63 years)
Actor effect	− .307	− .708, .095	− 1.587	− .204	− 1.013	− 1.549, − .477	− 3.928	.001***
Partner effect	.234	− .168, .637	1.213	.239	− .053	− .588, .483	− .204	.840
− 2 log likelihood	113.461
Bayes criterion	124.674

Dependent variable: health-related quality of life (EQ-5D-3L, Rabin & de Charro, 2001); *≤ .05, **≤ .01, ***≤ .001