Table 5.
Odds ratio (OR) and 95% confidence interval (CI) of estimated effects for tertiles of the diet score of cognitive impairment
| Variables | Model 1a | Model 2b | Model 3c |
|---|---|---|---|
| OR (95% CI) | OR (95% CI) | OR (95% CI) | |
| Diet Score | |||
| Tertile 1 | 1(reference) | 1(reference) | 1(reference) |
| Tertile 2 | 0.54(0.35,0.84) ‘ | 0.52(0.32,0.82) ‘ | 0.52(0.33,0.84) ‘ |
| Tertile 3 | 0.51(0.34,0.78) * | 0.49(0.32,0.76) * | 0.50(0.33,0.77) * |
| Tertile 4 | 0.46(0.28,0.75) * | 0.41(0.25,0.69) * | 0.43(0.26,0.72) * |
| Age | 1.03(1.00,1.07) # | 1.04(1.00,1.08) # | 1.04(1.00,1.08) # |
| Education years | 0.92(0.88,0.95) * | 0.94(0.90,0.98) ‘ | 0.93(0.89,0.98) * |
| Household income | 1.00(1.00,1.00) # | 1.00(1.00,1.00) | 1.00(1.00,1.00) |
| Smoking status | 0.92(0.78,1.10) | 0.93(0.77,1.12) | 0.91(0.75,1.09) |
| Functional status | 0.98(0.88,1.09) | 0.98(0.88,1.09) | |
| Depressive symptoms | 1.21(1.12,1.30) * | 1.20(1.12,1.30) * | |
| Hypertension | 1.96(1.38,2.78) * | 1.99(1.40,2.83) * | |
| Diabetes | 1.24(0.82,1.86) | 1.19(0.79,1.80) | |
| Body Mass Index (kg/m²) | 1.22(0.97,1.52) # |
Hierarchical multivariable logistics regression was used to test the association between the diet score (modelled in tertiles) and cognitive impairments; Significant at *P < 0.001; ’P < 0.01; #P < 0.05; (a) Model 1: adjusted for age, education years, household income and smoking status; (b) Model 2: adjusted for age, education years, household income, smoking status, IADL, GDS, hypertension and diabetes; (c) Model 3: adjusted for age, education years, household income, smoking status, IADL, GDS, hypertension and diabetes and body mass index