TABLE 4.
Tertiles of the DI score | ||||||
---|---|---|---|---|---|---|
Indicators of environmental sustainability | β (95% CI)2 | P value2 | Tertile 1 (n = 99) | Tertile 2 (n = 98) | Tertile 3 (n = 101) | P-trend3 |
Greenhouse gas emissions (kgCO2eq/2500 kcal) | −0.22 (−0.30, −0.14) | <0.001 | 6.48 (6.28, 6.67) | 6.08 (5.88, 6.28) | 5.85 (5.66, 6.05) | <0.001 |
Land use (m2 × y/2500 kcal) | −0.40 (−0.52, −0.29) | <0.001 | 8.24 (7.95, 8.52) | 7.61 (7.32, 7.90) | 7.16 (6.87, 7.44) | <0.001 |
Values are crude mean estimates (95% CIs) obtained from linear regression. DI, dietary index; kgCO2eq, kilogram of carbon dioxide equivalents.
Linear model including the DI score as a continuous variable.
P value for trend across tertiles of the DI score.