Table 1.

Descriptive Information and Reliability Data for Self-Report Physical Health Measures

	N	Mean Score (SD)	Internal Consistency°	3 Week Test- Retest Reliability	% of the sample with floor effects	% of the sample with ceiling effects	Mean Administration Time (sec)	Mean Administration Time/#items
Civilian sample
Fatigue CAT	335	51.83 (9.63)	.94	.78	0.0	1.2	32.45	7.43
Fatigue SF	337	51.33 (9.93)	.93	.76	0.9	10.7	23.81	5.95
Sleep Disturbance CAT	335	51.32 (9.44)	.92	.86	0.0	1.5	32.92	6.37
Sleep Disturbance SF	336	51.46 (8.63)	.84	.85	0.6	4.5	24.29	6.07
Military sample
Fatigue CAT	208	58.30 (9.22)	.94	.63	0.8	0.0	38.94	9.23
Fatigue SF	208	58.04 (9.21)	.94	.70	5.8	1.4	19.63	4.90
Sleep Disturbance CAT	208	58.16 (9.53)	.92--	.80	0.8	0.0	22.50	4.25
Sleep Disturbance SF	208	57.23 (8.11)	.81	.79	6.3	1.0	15.98	3.99

Note.

* = higher scores = better functioning;

° Cronbach ’s alphas are reported for all measures EXCEPT the computer adaptive tests which are reported as marginal (i.e., item response theory based) reliabilities.

PROMIS = Patient Reported Outcomes Measurement Information System;

CAT = Computer Adaptive Test;

SF = 4-item Short-Form;

CAS = Caregiver Appraisal Scale;

MPAI-4 = Mayo-Portland Adaptability Inventory-Fourth Edition;

ZBI = Zarit Burden Inventory;

retest samples were 56 civilians, 91 military