Table 2.
F-statistics for overall models (in bold) and exposure/covariate factors for models.
| Delayed verbal memory | |
| Overall model | F(5, 152) = 5.91*** |
| APOE | F(1, 152) = 2.03 |
| Ethnicity | F(1, 152) = 1.63 |
| Age | F(1, 152) = 19.27*** |
| Education | F(1, 152) = 4.08* |
| APOE × ethnicity | F(1, 152) = 2.32 |
| Digit span backward | |
| Overall model | F(5, 117) = 7.01*** |
| APOE | t = −0.71 |
| Ethnicity | t = 1.71 |
| Age | t = −0.51 |
| Education | t = 3.14** |
| APOE × ethnicity | t = 0.12 |
| Trails B/A | |
| Overall model | F(5, 149) = 0.96 |
| APOE | – |
| Ethnicity | – |
| Age | – |
| Education | – |
| APOE × ethnicity | – |
| Trail A | |
| Overall model | F(5, 155) = 20.86*** |
| APOE | t = 0.52 |
| Ethnicity | t = −0.97 |
| Age | t = 3.13** |
| Education | t = −5.44*** |
| APOE × ethnicity | t = −1.24 |
| Digit-symbol | |
| Overall model | F(5, 85) = 25.78*** |
| APOE | F(1, 85) = 2.62 |
| Ethnicity | F(1, 85) = 22.58*** |
| Age | F(1, 85) = 15.14*** |
| Education | F(1, 85) = 48.85*** |
| APOE × ethnicity | F(1, 85) = 1.72 |
| Mini-mental state examination | |
| Overall model | F(5, 145) = 9.80*** |
| APOE | t = 0.50 |
| Ethnicity | t = 0.66 |
| Age | t = −1.72† |
| Education | t = 4.05*** |
| APOE × ethnicity | t = 0.66 |
t-statistics from robust standard errors are included in place of F-statistics for models in which there was a violation of homoskedasticity. p < 0.10, *p < 0.05, **p < 0.01, ***p < 0.001.