Table 4.

Clinical utility of the SCD bank and shortened item list

Selected SCD Items	NC, n = 91				MCI, n = 28				P value*	Effect size
Mean (SD)	25th percentile	50th percentile	75th percentile	Mean (SD)	25th percentile	50th percentile	75th percentile
Theta ability of the bank	−0.1 ± 0.9	−0.7	−0.25	0.4	0.3 ± 0.8	−0.1	0.3	0.7	<.01	0.47
Total score of bank (21 items)	7.7 ± 5.1	3.5	6.0	11.5	10.1 ± 4.9	7.0	9.5	13.0	.02	0.48
Total score of top 10 items	4.4 ± 3.1	2.0	4.0	7.0	5.8 ± 2.8	3.8	6.0	8.0	.02	0.47
Total score of top nine items	3.8 ± 2.9	1.0	3.0	6.0	5.1 ± 2.4	3.0	5.0	7.0	.02	0.49
Total score of top eight items	3.5 ± 2.6	1.0	3.0	6.0	4.8 ± 2.3	3.0	5.0	6.2	.02	0.53
Total score of top seven items	2.8 ± 2.4	1.0	3.0	5.0	3.9 ± 2.1	2.8	4.0	5.2	.02	0.49
Total score of top six items	2.2 ± 2.1	0.0	2.0	4.0	3.1 ± 1.9	2.0	3.0	5.0	.03	0.45
Total score of top five items	1.9 ± 1.8	0.0	1.0	3.0	2.7 ± 1.6	2.0	2.5	4.0	.02	0.47

Abbreviations: SCD, subjective cognitive decline; NC, cognitively normal; MCI, mild cognitive impairment; SD, standard deviation.

NOTE. *P value for Wilcoxon test used to compare diagnostic groups; effect size presented as Cohen's D.