Table 5:

Fit Indices for Each of the Hypothesized Models

Model Number	Hypothesized Factors	Anger	Anxiety	Depression	Social Isolation	Sleep Disturbance	Fatigue	Ability to Participate SRA	Satisfaction with SRA	Emotional Support	Informational Support	Feelings of Loss-Self	Feelings of Loss-Person with TBI	Feeling Trapped	Caregiver-Specific Anxiety	Caregiver Strain	RMSEA (≤.08)	CFI (≥.95)	TLI (≥.95)	CMIN/DF (≤3)	Absolute AIC (< better)	Baseline (Mode 1) - Model AIC (≥ 3 clinically meaningful)
1	One-Factor HRQOL (Baseline Model)	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	0.13	0.91	0.88	9.90	663.70	0
3	HRQOL, Social	●	●	●	●	●	●	●	●	●	●						0.08	0.95	0.94	4.84	470.03	−193.67
	Emotional Health (Feeling Loss, Trapped, Caregiver Anxiety and Strain)											●	●	●	●	●
10	Negative Affect	●	●	●													0.07	0.97	0.96	3.64	361.29	−302.41
	Social Health									●	●
	Social Participation							●	●
	Social Isolation				●									●
	Physical Health					●	●
	Caregiver-Specific Emotional Health											●	●		●	●
11	Negative Affect	●	●	●													0.07	0.97	0.96	3.62	366.61	−297.09
	Social Participation and Support							●	●	●	●
	Social Isolation				●									●
	Physical Health					●	●
	Caregiver-Specific Emotional Health											●	●		●	●

^●indicates which measurement domains were included in each hypothesized factor