Table 4. Relative Risk of Incident Dementia by Diet Pattern Scorea.
| Measure | Tertile 1 | Tertile 2 | Tertile 3 | P Value for Trendb |
|---|---|---|---|---|
| Western Diet Score | ||||
| Model 1c | ||||
| Cases/person-years, No.d | 865/108.2 | 802/106.3 | 739/102.5 | .68 |
| Hazard ratio (95% CI) | [Reference] | 1.05 (0.94-1.16) | 1.06 (0.92-1.21) | |
| Model 2e | ||||
| Cases/person-years, No.d | 834/102.9 | 757/101.1 | 708/97.0 | .88 |
| Hazard ratio (95% CI) | [Reference] | 1.01 (0.91-1.13) | 1.06 (0.92-1.22) | |
| Prudent Diet Score | ||||
| Model 1e | ||||
| Cases/person-years, No.d | 781/105.0 | 798/106.5 | 827/105.5 | .08 |
| Hazard ratio (95% CI) | [Reference] | 0.97 (0.88-1.08) | 1.04 (0.93-1.17) | |
| Model 2e | ||||
| Cases/person-years, No.d | 750/99.7 | 766/101.2 | 783/100.1 | .34 |
| Hazard ratio (95% CI) | [Reference] | 0.97 (0.87-1.07) | 0.99 (0.88-1.12) | |
a
We excluded 5 participants with invalid censoring date.
b
A linear trend was tested across the dietary tertiles using the median score of each tertile modeled as a continuous variable.
c
Model 1 adjusted for age, sex, education, race–field center, and total calories.
d
Person-years presented in 1000 person-years.
e
Model 2 further excluded 693 participants with missing covariate information and adjusted for covariates in model 1 and apolipoprotein E ε4 status, alcohol use history, smoking history, activity level, body mass index, total cholesterol, prevalent coronary heart disease, and history of hypertension, diabetes, and stroke.