| Health condition | Good | 9(18.37) | 13(18.57) | 22(18.49) | 3.849 |
| Normal | 26(53.06) | 47(67.14) | 73(61.34) |
| Infirm | 14(28.57) | 10(14.29) | 24(20.17) |
|
| Teeth condition | Natural teeth | 10(20.41) | 9(12.86) | 19(15.97) | 3.228 |
| Natural teeth and false teeth | 9(18.37) | 18(25.71) | 27(22.69) |
| Partial denture or implant | 18(36.73) | 23(32.86) | 41(34.45) |
| Denture | 12(24.49) | 18(25.71) | 30(25.21) |
| No teeth | 0(0.00) | 2(2.86) | 2(1.68) |
|
| Smell condition | Sensitive | 19(38.77) | 25(35.71) | 44(36.97) | 4.662 |
| Normal | 21(42.86) | 36(51.43) | 57(47.90) |
| Can not take on the smell | 9(18.37) | 6(8.57) | 15(12.61) |
| Can not take on the smell of almost | 0(0.00) | 2(2.86) | 2(1.68) |
| Can not take on the smell at all | 0(0.00) | 1(1.43) | 1(0.84) |
|
| Smoking | Smoking | 5(10.20) | 0(0.00) | 5(4.20) | 7.456** |
| Nonsmoking | 44(89.80) | 70(100.00) | 114(95.80) |
|
| Amount of smoking | ≥ 2 cigarette | 2(40.00) | 0(0.00) | 2(40.00) | 9.027 |
| 3-9 cigarette | 1(20.00) | 0(0.00) | 1(20.00) |
| 10 cigarette | 1(20.00) | 0(0.00) | 1(20.00) |
| > a pack of cigarettes | 1(20.00) | 0(0.00) | 1(20.00) |
| < a pack of cigarettes | 0(0.00) | 0(0.00) | 0(0.00) |
|
| Drinking alchol | Drinking | 21(42.86) | 6(8.57) | 27(22.69) | 19.316*** |
| Not revealed | 28(57.14) | 64(91.43) | 92(77.31) |
|
| Amount of drinking | > 1 bottle | 12(57.14) | 6(100.00) | 18(66.67) | 22.068*** |
| 1-2 bottle | 8(38.10) | 0(0.00) | 8(29.63) |
| 3-5 bottle | 1(4.76) | 0(0.00) | 1(3.70) |
| 6-8 bottle | 0(0.00) | 0(0.00) | 0(0.00) |
| ≤ 9 bottle | 0(0.00) | 0(0.00) | 0(0.00) |