. Author manuscript; available in PMC: 2023 Apr 6.

Published in final edited form as: Am J Geriatr Psychiatry. 2017 Apr 20;25(9):980–991. doi: 10.1016/j.jagp.2017.04.011

Table 1:

Demographic and clinical characteristics of SSD groups at baseline (n=101, df=99)

	Non-SSD (n=69)	SSD (n=32)	Mann-Whitney U or Fisher’s Exact p-value
Age, years	73.71±7.99	75.84±7.59	0.278
Gender (M:F)	47:22	24:8	0.640
APOE Status (ε4:non-ε4)	35:34	19:13	0.521
Education, years	15.93±3.01	15.62±2.86	0.547
MMSE	27.19±1.90	27.09±1.69	0.742
GDS Total Score	1.28±1.24	2.19±1.51	0.004
NPI Total Score	0.43±0.83	5.41±4.05	<0.001

Note: Group differences were analyzed using Mann-Whitney U tests for continuous measures and Fisher’s Exact test for categorical measures. All values represent mean±standard deviation unless otherwise noted. MMSE= Mini Mental Status Exam, GDS = Geriatric Depression Scale; NPI =Neuropsychiatric Inventory