Objective cognitive functioning in patients with stress-related disorders: a cross-sectional study using remote digital cognitive testing

Table 2 Cognitive test results for patients with stress-related mental disorders as compared to norms

Cognitive test	Mean¹ (SD)	Test statistic²	df	p-value³	Effect size²	95% CI
Attention and processing speed
SDMT	-.44 (.92)	-7.77	265	< .001	-.48	[-.60, -.35]
Executive functions
FAS	-.11 (.82)	-2.03	243	.022	-.13	[-.26, 0]
Stroop index	-.62 (1.13)	7699	265	< .001	-.57	[-.65, -.47]
Stroop interference	-.28 (1.45)	15224	265	.022	-.14	[-.28, -.01]
Memory
CERAD learning	-.33 (1.13)	10390	244	< .001	-.31	[-.44, -.18]
CERAD recall	-.5 (.92)	6983	244	< .001	-.54	[-.63, -.47]
Corsi	-.22 (.95)	12174	265	< .001	-.31	[-.43, -.19]

Abbreviations. CERAD, Consortium to Establish a Registry for Alzheimer’s Disease; SDMT, Symbol Digit Matching Task
¹Mean signifies the mean of z-scores in the patient group
²For SDMT and FAS, the Test statistic is the t-statistic, and the effect size is given by Cohen's d. For Stroop index and interference, CERAD learning and recall and Corsi, Test statistic is the value of the W-statistic and effect size is given by the matched rank biserial correlation
³For the Student t-test. the alternative hypothesis specifies that the mean is less than 0. For the Wilcoxon test the alternative hypothesis specifies that the median is less than 0

ISSN: 1471-244X