Table 1. Participant, cognitive, and overall TUG performance characteristics.

	All	NCI	MCI	NCI vs. MCI
	(n = 757)	(n = 520)	(n = 237)	p-value
Age (years)	81±7	80±7	84±7	< .001
Female (%)	77.1	78.3	74.7	.30
Black (%)	32.9	33.6	31.5	.61
Education (years)	15.7±3.3	15.7±3.3	15.9±6.3	.57
Cognitive Performance
Mini-Mental State Exam	28.1±1.8	28.5±1.4	27.1±2.2	< .001
Global Composite (z-score)	0.24±0.27	0.43±0.46	-0.17±0.55	< .001
TUG Performance
TUG Duration (s)	15±7	14±6	17±8	< .001
Gait speed (m/s)	0.77±0.3	0.81±0.3	0.67±0.3	< .001
DT TUG Duration (s)	21±11	19±8	26±13	< .001
Gait speed (m/s)	0.52±0.2	0.57±0.2	0.44±0.2	< .001
DT Serial Subtraction
Total # Responses	7.2 ± 2.4	7.33 ± 2.2	6.9 ± 2.6	.038
# Correct	6.2 ± 2.6	6.4 ± 2.4	5.6 ± 2.7	< .001
# Incorrect	1.0 ± 1.4	0.9 ± 1.3	1.3 ± 1.4	< .001