Characteristic | Number | Percentage | Number | Percentage | Significance |
---|---|---|---|---|---|
Do you have any missing tooth/teeth? | No | (n = 2) | Yes | (n = 423) |  |
Education level | |||||
 Primary education | 1 | 50.0% | 25 | 5.9% |  |
 Up to grade 8 | 0 | 0.0% | 38 | 9.0% |  |
 Ordinary level (O/L) | 0 | 0.0% | 173 | 40.9% | p = 0.022 |
 Advanced level and above (A/L) | 0 | 0.0% | 147 | 34.8% |  |