Table 5.

Descriptive Data for the different TBI-CareQOL Military Health Care Frustration administration formats

	N	Internal consistency reliability	Test-retest stability	Mean (SD)	% at Floor	% at Ceiling	Administration Time (sec)	Average administration time per item (sec)
Military Health Care Frustration – CAT	317	0.92 *	0.88	50.5 (10.4)	10.2	3.4	40.9	7.7
Military Health Care Frustration – Caregiver Short Form	294	0.96 **	0.89	50.5 (10.4)	11.2	17.4	40.0	6.7
Military Health Care Frustration – Person with TBI Short Form	307	0.95 **	0.94	50.1 (9.9)	12.4	8.1	46.2	7.7

Note: CAT = Computer Adaptive Test; TBI – Traumatic Brain Injury

^*Mean standard error-based reliability

^**Cronbach’s alpha reliability