Table 2 Changes in types of mandibular dental arch form from age 12 through 15 to age 18 years.
Age (years) | Clusters | p-value | Pair-wise comparison | |||
---|---|---|---|---|---|---|
Narrow N (%) | Middle N (%) | Wide N (%) | Age pair | p-value | ||
12 | 81 (27.2) | 62 (28,4) | 75 (34.4) | 12 vs 15 | p < 0.01*** | |
15 | 46 (21.6) | 82 (37.6) | 90 (41.3) | p < 0.001*** | 15 vs 18 | p < 0.001*** |
18 | 90 (41.3) | 83 (38.1) | 45 (21.6) | 12 vs 18 | p < 0.01** |