Table 2. Association between the presence of oral lesions and COVID-19 infection and smoking status (n = 5,342).
| Reported oral lesions | COVID-19 infection | Smoking | Total n (%) |
||||
|---|---|---|---|---|---|---|---|
| Yes n (%) | No n (%) | p value | Yes n (%) | No n (%) | p value | ||
| Nothing | 209 (48.2) | 2,854 (58.1) | <0.001 | 232 (35.3) | 2,831 (60.4) | <0.001 | 3,063 (57.3) |
| Stained teeth | 77 (17.7) | 750 (15.3) | 0.17 | 243 (37.0) | 584 (12.5) | <0.001 | 827 (15.5) |
| Dental caries | 103 (23.7) | 1,046 (21.3) | 0.24 | 156 (23.7) | 993 (21.2) | 0.14 | 1,149 (21.5) |
| Gingival inflammation | 57 (13.1) | 525 (10.7) | 0.12 | 107 (16.3) | 475 (10.1) | <0.001 | 582 (10.9) |
| Dry mouth | 48 (11.1) | 370 (7.5) | 0.009 | 122 (18.6) | 296 (6.3) | <0.001 | 418 (7.8) |
| Change in taste | 50 (11.5) | 131 (2.7) | <0.001 | 55 (8.4) | 126 (2.7) | <0.001 | 181 (3.4) |
| Leukoplakia | 20 (4.6) | 93 (1.9) | <0.001 | 25 (3.8) | 88 (1.9) | 0.001 | 113 (2.1) |
| Burns or ulcers | 10 (2.3) | 59 (1.2) | 0.07 | 21 (3.2) | 48 (1.0) | <0.001 | 69 (1.3) |
| Hairy tongue | 10 (2.3) | 35 (0.7) | 0.001 | 13 (2.0) | 32 (0.7) | 0.001 | 45 (0.8) |