Table 3 Survey-weighted cognitive composite score and its components by socioeconomic status (SES) and healthy lifestyle score from the U.S. National Health and Nutrition Examination Survey 2011–2014.
Cognition score | Total (N = 1313) | Low SES (N = 381) | Medium SES (N = 351) | High SES (N = 581) | P value |
|---|---|---|---|---|---|
Mean (SE) | Mean (SE) | Mean (SE) | Mean (SE) | ||
By SES groups | |||||
Composite z-score* | 0.24 (0.02) | − 0.07 (0.04) | 0.06 (0.04) | 0.41 (0.02) | < 0.0001 |
Individual tests | |||||
CERAD† | |||||
Immediate learning | 0.2 (0.02) | 0.3 (0.04) | 0.2 (0.04) | 0.2 (0.03) | 0.22 |
Delayed recall | 6.3 (0.09) | 5.7 (0.2) | 5.8 (0.2) | 6.7 (0.1) | < 0.0001 |
Animal Fluency | 18.4 (0.2) | 16.2 (0.4) | 16.9 (0.4) | 19.8 (0.3) | < 0.0001 |
Digit Symbol Substitution (DSST) | 53.3 (0.7) | 41.8 (1.5) | 48.5 (1.0) | 58.8 (0.7) | < 0.0001 |
Total (N = 1,313) | 0 or 1 healthy behavior (N = 341) | 2 healthy behaviors (N = 512) | 3 or 4 healthy behaviors (N = 460) | P value | |
|---|---|---|---|---|---|
By healthy lifestyle groups | |||||
Composite z-score* | 0.24 (0.02) | 0.20 (0.04) | 0.24 (0.03) | 0.27 (0.03) | 0.11 |
Individual tests | |||||
CERAD† | |||||
Immediate learning | 0.2 (0.02) | 0.2 (0.04) | 0.2 (0.03) | 0.3 (0.04) | 0.11 |
Delayed recall | 6.3 (0.09) | 6.3 (0.1) | 6.4 (0.1) | 6.3 (0.1) | 0.80 |
Animal Fluency | 18.4 (0.2) | 18.2 (0.5) | 18.5 (0.3) | 18.6 (0.3) | 0.39 |
Digit Symbol Substitution (DSST) | 53.3 (0.7) | 52.2 (0.1) | 53.6 (1.0) | 54.0 (0.9) | 0.14 |
