TABLE 1.
Clinical characteristics of the subjects.
| Healthy controls | DOI-low DOI ≤ 5 mm | DOI-medium 5 < DOI ≤ 10 mm | DOI-high DOI > 10 mm | P value | |
| N | 10 | 11 | 12 | 17 | |
| Age | 60.3 ± 8.4 | 62.1 ± 14.4 | 59.25 ± 16.6 | 62.4 ± 12.8 | p = 0.524a |
| Female | 3 | 3 | 3 | 7 | p = 0.787b |
| Smoking | 3 | 4 | 6 | 6 | p = 0.784b |
| Drinking | 2 | 2 | 4 | 3 | p = 0.752b |
| BMI | |||||
| ≥ 18.5-25 kg/m2 | 8 | 9 | 10 | 15 | p = 0.109c |
| ≥25-28 kg/m2 | 2 | 2 | 2 | 2 | |
| sampling site | |||||
| Tongue | 5 | 5 | 5 | 6 | |
| buccal mucosa | 1 | 0 | 1 | 0 | |
| floor of mouth | 1 | 1 | 3 | 4 | p = 0.936b |
| Gingiva | 2 | 4 | 2 | 5 | |
| Palate | 1 | 1 | 1 | 2 |
The labels a, b, and c for the p values represent different statistical analysis methods. a means non-parametric test, b means chi-square test, and c means ANOVA.