Table 2. Two-level HLM Models (Time Nested Within Individual) Predicting PTGI.

Variable	Coefficient	SE	t	df
Waitlist versus treatment immediately
Intercept	45.19	5.27	8.57**	42.1
Time	0.31	1.74	0.18	36.3
Condition	0.06	7.58	0.01	42.6
Time × Condition	6.24	2.60	2.40*	38.8
Pre-treatment DAS
Intercept	65.32	14.08	4.64**	36
DAS	-0.19	0.14	-1.41	36
Time	-8.90	6.94	-1.28	36
Time × DAS	0.14	0.07	2.01	36

Note. For the time x condition interaction, Hedge's g between group effect size = 0.45. For the time × DAS interaction, Hedge's g effect size = 0.65. PTGI = Posttraumatic Growth Inventory; DAS = Dyadic Adjustment Scale.

^*p < .05.

^**p < .01.