TABLE 3.
Relation of glycemic dietary intake measures with cognitive performance1
HGLDiet pattern | Sugar intake | Glycemic load | Carbohydrate intake | |
Global | −0.01 | −0.26** | −0.15 | −0.16 |
MMSE | −0.07 | −0.18* | −0.16 | −0.11 |
WAIS-R Digit Symbol | 0.07 | −0.23* | −0.13 | −0.13 |
Trail Making Test A2 | 0.02 | −0.15 | −0.07 | −0.08 |
Trail Making Test B2 | 0.02 | −0.29** | −0.16 | −0.17 |
Category Fluency | −0.11 | −0.17 | −0.15 | −0.15 |
Stroop | 0.05 | −0.01 | 0.04 | 0.03 |
Block Design | 0.06 | −0.20* | −0.11 | −0.13 |
SRT–free | −0.04 | −0.15 | −0.06 | −0.12 |
Values are standardized β values for the respective dietary glycemic measure determined by multivariate linear regression controlling for age, sex, and education; n = 128. *P ≤ 0.05, **P ≤ 0.01. HGLDiet, high-glycemic-load diet; MMSE, Mini-Mental State Examination; SRT, Selective Reminding Test; Stroop, Stroop Color-Word Interference Test; WAIS-R, Wechsler Adult Intelligence Scale–Revised.
For consistency with other measures, we multiplied z scores for Trail Making Tests A and B by −1 so that negative scores reflect cognitive decline.