Table 1.

Sample characteristics and correlations with gait speed.

Sample size	Mean	SD	Pearson's r
	N = 58		N = 58
Age (years)	62.16	9.89	0.01
Male (%)	63.79		t57 = 0.581
Education (years)	16.47	2.59	0.32*
WTAR Estimated FSIQa	115.62	14.56	−0.24
D-KEFS number/letter switching scaled score	10.05	3.57	0.32*
Digit span sequencing scaled score	11.19	2.67	0.17
D-KEFS color-word inhibition scaled score	10.71	3.17	0.24
Height (cm)	67.35	3.75	−0.04
Waist circumference (cm)	96.37	17.26	−0.29*
Triglyceridea (mg/dL)	97.86	42.92	0.21
HDL-cholesterol (mg/dL)	58.29	16.91	0.15
Systolic blood pressure (mmHg)	126.28	16.95	−0.21
Diastolic blood pressure (mmHg)	73.69	9.41	−0.02
Glucosea (mg/dL)	95.76	15.67	0.08
Gait Speed (meters/second)	0.97	0.14	—
gradCPT accuracy (d′)	2.84	0.87	0.45***
gradCPT mean reaction time (RT)	0.82	0.07	−0.31*
gradCPT omission Errorsa	0.06	0.07	−0.31*
gradCPT commission Errorsa	0.20	0.16	−0.30*

^*p < 0.05,

^**p < 0.01,

^***p < 0.001.

^aTransformed due to skewness (see Methods). ¹T-Test on gait speed by sex.