Table 3. Logistic regression analysis of factors associated with the number of natural teeth.
| Independent variables | Model 1 | Model 2 | |||
|---|---|---|---|---|---|
| Crude OR | Adjusted2) OR | ||||
| OR (95% CI) | P-value | OR (95% CI) | P-value | ||
| Frailty | |||||
| Non-frailty1) (Ref.) | 1.00 | 1.00 | |||
| Prefrailty1) | 6.18 (3.54–10.77) | < 0.001 | 4.66 (2.54–8.52) | < 0.001 | |
| Dietary patterns | |||||
| Bread and beverages1) (Ref.) | 1.00 | 1.00 | |||
| Vegetables and dairy products1) | 0.54 (0.36–0.83) | 0.005 | 0.43 (0.27–0.69) | < 0.001 | |
| Rice and fish and shellfish1) | - | - | 0.71 (0.45–1.13) | 0.149 | |
OR, odds ratio; CI, confidence interval.
1)Numbers of subjects. Total: 267, number of natural teeth ≥ 20, 114; number of natural teeth < 20, 153; non-frailty, 167; prefrailty, 100; bread and beverages, 54; vegetables and dairy products, 113; rice and fish and shellfish, 100.
2)Adjusted for age (yrs) and the number of chronic diseases as continuous variables (n = 267 each), living alone (yes: n = 53 or no: n = 214), and alcohol drinking (yes: n = 108 or no: n = 159).