. Author manuscript; available in PMC: 2017 Nov 1.

Published in final edited form as: Neuropsychology. 2016 Jun 9;30(8):980–987. doi: 10.1037/neu0000298

Table 2.

Results from Regression Models Predicting Neuropsychological Test Performance from Cholesterol and Covariates^*

Neuropsychological Test	Total cholesterol² × Age				LDL cholesterol² × Age

	b	SE	p	r² ^†	b	SE	p	r² ^†
Digit Span Forward (total score)	−.00002	.0002	.90	.0001	.00001	.0002	.96	<.0001
Digit Span Backward (total score)	−.0004	.0002	.057	.0192	−.0005	.0003	.057	.0194
Logical Memory I (total score)	−.0005	.0005	.31	.0051	−.0005	.0007	.50	.0023
Logical Memory II (total score)	−.0013	.0006	.039	.0202	−.0012	.0008	.14	.0106
Visual Reproduction I (log total score)	−.00001	.00001	.61	.0013	−.00002	.00002	.27	.0062
Visual Reproduction II (total score)	−.0009	.0007	.21	.0075	−.0020	.0009	.026	.0236
Trail Making Test, Part A (log seconds)	.00001	.00003	.62	.0013	.00004	.00004	.22	.0080
Trail Making Test, Part B (log seconds)	.00004	.00003	.19	.0081	.0001	.00004	.044	.0195
Judgment of Line Orientation (total score)	−.0002	.0003	.50	.0019	−.0004	.0004	.32	.0041
Block Design (total score)	−.0009	.0007	.19	.0078	−.0017	.0009	.059	.0158
Grooved Pegboard Test, dominant (log seconds)	.00002	.00001	.14	.0091	.00002	.00002	.16	.0083
Grooved Pegboard Test, non-dominant (log seconds)	.00003	.00002	.073	.0152	.00004	.00002	.068	.0157

Models adjusted for age, sex, education, systolic blood pressure, glucose, smoking, alcohol use, depressive symptoms, antihypertensive medication use, and lipid-lowering medication use. Total and LDL cholesterol examined in separate models. Only quadratic cholesterol terms are presented here for brevity; all models included linear cholesterol terms and were fully specified (i.e., cholesterol, cholesterol × age, cholesterol², cholesterol² × age).

^†

Values represent covariate-adjusted squared semi-partial correlation coefficients.

Abbreviation: LDL = low-density lipoprotein