Table 2.

Descriptive Statistics, Internal Consistency, Interrater Reliability, and Test–Retest Reliability

Measure	M (SD)	α	Interrater r	Test–retest r (95% confidence interval)
GADQ-IV	3.47 (3.69)	.858	.992	.481 (−.019 to .788)
PSWQ	41.59 (11.10)	.794	.999	.788 (.480 to .923)
PSWQ-A	18.81 (8.43)	.887	1.00	.760 (.425 to .912)
BAI	11.56 (11.13)	.918	.982	.638 (.209 to .861)
BMWS	7.23 (6.90)	.926	.994	.527 (.043 to .810)
GADSS	6.38 (5.35)	.903	.957	.921 (.783 to .972)
GWS	1.84 (1.89)	.778	1.00	.855 (.624 to .948)
GAI	4.63 (5.57)	.934	1.00	.952 (−.106 to 1.00)

Notes: GADQ-IV = Generalized Anxiety Disorder Questionnaire for DSM-IV; PSWQ = Penn State Worry Questionnaire; PSWQ-A = Penn State Worry Questionnaire Abbreviated Version; BAI = Beck Anxiety Inventory; BMWS = Brief Measure of Worry Severity; GADSS = Generalized Anxiety Disorder Severity Scale; GWS = geriatric worry scale; GAI = Geriatric Anxiety Inventory. Sample size for mean, standard deviation, and alpha for measures is n = 66, with the exception of the GAI, which is n = 35. Sample size for test–retest reliability is n = 16, with the exception of the GAI, which is n = 4. Sample size for interrater reliability is n = 16, with the exception of the GAI, which is n = 7.