. Author manuscript; available in PMC: 2017 Feb 28.

Published in final edited form as: Clin Neuropsychol. 2016 Feb 29;30(2):338–350. doi: 10.1080/13854046.2016.1138504

Table 7.

Internal consistency and test–retest reliability estimates of the Brief Symptom Inventory-18 scale.

	Internal Consistency	Test–Retest Reliability

		7 days	30 days	45 days	165 days
GSI	.83	.69	.65	.37	.52
SOM	.66	.70	.60	.40	.28
ANX	.66	.62	.41	.31	.46
DEP	.76	.56	.52	.38	.44

Note: internal consistency: n = 2,031. Test–retest reliability: ns at 7, 30, 45, and 165 days = 119, 99, 103, and 131, respectively. ANX = anxiety; Dep = Depression; gsi = global severity index; and SOM = somatization.