Demographics | 12-14 years (N) | 15-17 years (N) | p-value |
---|---|---|---|
Gender | 0.163 | ||
 Male | 137 | 132 |  |
 Female | 182 | 139 |  |
Venue | Â | Â | 0.051 |
 Orthodontic clinics | 40 | 50 |  |
 Schools | 279 | 221 |  |
Ethnicity | 0.156c | ||
 Malay | 248 | 190 |  |
 Chinese | 46 | 50 |  |
 Indian | 21 | 28 |  |
 Others | 4 | 3 |  |
aSeverity of malocclusion (Self-rated) | 0.693 | ||
 Lower quartile | 81 | 66 |  |
 Middle quartile | 163 | 133 |  |
 Upper quartile | 75 | 72 |  |
bSeverity of malocclusion (Investigator-rated) | 0.376 | ||
 Lower quartile | 86 | 61 |  |
 Middle quartile | 152 | 143 |  |
 Upper quartile | 81 | 67 |  |