Table 1.

Demographics and Neurocognitive Performance of Patients with Impaired and Intact Understanding

Measure	Intact (n=22)	Impaired (n=19)	t	df	p*	d
Demographics
Age	57.2 (14.0, 31–80)	62.4 (9.8, 46–84)	−1.3	39	0.188	0.43
Education	14.3 (2.8, 9–20)	12.9 (2.5, 9–19)	1.6	39	0.124	0.53
Female	14 (64)	12 (63)	<0.1	1	0.975	n/a
Understanding	34.1 (5.6, 26–44)	19.4 (6.2, 1–25)	7.5	39	<0.001	2.48
Achievement
WRAT-3 Reading	48.3 (7.3, 33–57)	41.2 (9.6, 13–53)	2.6	37	0.013	0.83
Attention
Digit Span	16.9 (3.6, 10–26)	12.8 (2.9, 8–19)	3.9	37	<0.001	1.25
Expressive Language
Animal Naming	17.5 (4.1, 11–25)	13.6 (4.0, 8–27)	3.0	37	0.005	0.96
Phonemic Fluency	34.7 (12.6, 21–60)	18.7 (6.4, 8–21)	5.1	31	<0.001	1.60
Memory
HVLT Immediate	22.3 (4.8, 15–32)	15.9 (5.1, 5–29)	4.1	38	<0.001	1.29
HVLT Delayed	8.2 (2.7, 2–12)	4.0 (3.0, 0–10)	4.7	38	<0.001	1.47
HVLT Recognition	10.5 (1.2, 7–12)	8.9 (2.7, 1–12)	2.4	36	0.021	0.77
Executive Function
Trails A	32.2 (10.6, 16–50)	54.5 (37.6, 28–180)	−2.4	19	0.025	0.81
Trails B	118.8 (81.3, 39–300)	184.9 (104.7, 72–300)	−2.2	37	0.033	0.71
Digit Symbol	61.4 (20.7, 32–97)	43.4 (14.4, 14–67)	3.0	33	0.006	1.0
Depression
BDI	8.6 (6.2, 0–22)	11.6 (9.5, 3–43)	−1.2	35	0.257	0.37

Note. Except for male and female, values for Impaired and Intact are mean (SD, range). For male and female, values are n (%). p* value for t-test analyzing group differences (age, education) or Pearson’s Chi square test (gender). CCTI=Capacity to Consent to Treatment Instrument, HVLT=Hopkins Verbal Learning Test, BDI=Beck Depression Inventory, WRAT=Wide Range Achievement Test, n/a=not available, d=Cohen’s d, n/a=not available.