. 2021 Apr 6;24:100388. doi: 10.1016/j.invent.2021.100388

Table 2.

Intention-to-treat (ITT) linear mixed model analysis of group, time and interaction effects on individual and parental stress.

Fixed effects	Individual stress			Parental stress
Fixed effects	F	df	p	F	df	p
Intercept	4162.08	1;273	<.001**	1413.48	1;246	<.001**
Group	0.16	2;214	.865	0.01	2;208	.992
Time	40.66	2;273	<.001**	43.83	2;246	<.001**
Group × time	6.03	4;273	<.001**	1.83	4;246	.124
Random effects	Variance	L.Ratio	p	Variance	L.Ratio	p
Intercept	32.47	226.16	<.001**	77.86	260.92	<.001**
Residual	12.68			17.86
Model fit indices		Marginal	Conditional		Marginal	Conditional
Pseudo-R²		.07	.74		.04	.82
AIC	3074			3127
BIC	3120			3172

Note. N = 217 participants (parental stress: 211), 496 observations (parental stress: 463). AIC: Akaike Information Criterion. BIC: Bayesian Information Criterion. Marginal Pseudo-R² indicates the proportion of variance explained by the fixed factors only, whereas conditional Pseudo-R² indicates the proportion of variance explained by the overall model. *p < .05, **p < .01.