The Effect of Neurobehavioral Test Performance on the All-Cause Mortality among US Population

Table 2

Associations between cognitive function tests and all-cause mortality.

Cognitive function test	Male				Female
	⁢Model 1		⁢Model 2		⁢Model 1		⁢Model 2
	HR (95% CI)	value	HR (95% CI)	value	HR (95% CI)	value	HR (95% CI)	value
Symbol digit substitution test (SDST)	2.88 (2.06, 4.02)	<0.001	2.02 (1.36, 2.99)	0.001	2.64 (1.80, 3.86)	<0.001	1.36 (0.82, 2.25)	0.23
Serial digit learning task (SDLT)	1.75 (1.28, 2.40)	<0.001	1.47 (1.02, 2.12)	0.041	1.66 (1.15, 2.38)	0.006	1.23 (0.77, 1.95)	0.39

HR: hazard ratio; CI: confidence interval.
< 0.05.
Model 1: unadjusted.
Model 2: adjusted for age, race/ethnicity, education, blood pressure, serum folate, serum C-reactive protein, serum glucose, body mass index, smoking status, heart failure, stroke, and chronic bronchitis.