Table 4.
Geographic and Economic Supermarket Access in Relation to Likelihood of Having a DASH-Accordant Diet (n=9,724)
| Exposure measure | Model 1 | Model 2 | Model 3 |
|---|---|---|---|
| Geographic access to supermarkets | |||
| T1 (ref; 0–1.12 km) | 1 | 1 | 1 |
| T2 (1.13–5.00 km) | 0.83 (0.73, 0.94) | 0.93 (0.82, 1.07) | 0.96 (0.84, 1.10) |
| T3 (5.01–15.08 km) | 0.76 (0.66, 0.86) | 0.81 (0.71, 0.93) | 0.85 (0.74, 0.98) |
| Economic access to supermarkets | |||
| T1 (ref; 0–2.03 km) | 1 | 1 | 1 |
| T2 (2.04–7.35 km) | 0.67 (0.59, 0.76) | 0.71 (0.63, 0.81) | 0.73 (0.64, 0.83) |
| T3 (7.36–32.16 km) | 0.53 (0.46, 0.60) | 0.57 (0.50, 0.66) | 0.59 (0.52, 0.68) |
Note: Values are OR (95% CI). Accordance to DASH was defined as a DASH score >28. Coefficients were derived from logistic regression analyses. Boldface indicates statistical significance (p<0.05). T1 is the tertile with shortest distance to the nearest supermarket (reference group), while T3 is the tertile with the longest distance to the nearest supermarket. Model 1 is an unadjusted model; in Model 2 associations are adjusted for individual-level covariates (age, sex, car ownership, educational level, and energy intake); in Model 3 associations are additionally adjusted for exposure to other food outlets within a 1-mile Euclidean buffer of the nearest supermarket.
DASH, Dietary Approaches to Stop Hypertension; T, tertile.