Table 3.
Distribution of patients based on the depth of impaction (Pell and Gregory Classification) according to sex, age and affected jaw (N=2550).
| - | - | Level A | Level B | Level C | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| N | % | p | N | % | p | N | % | p | ||
| Total (N=2550) | 1365 | 53.5% | 182 | 7.1% | 177 | 6.9% | ||||
| Sex | Male | 889 | 65.1% | 122 | 67.0% | 106 | 59.9% | 0.161 | ||
| Female | 476 | 34.9% | 0.675 | 60 | 33.0% | 0.507 | 71 | 40.1% | ||
| Age group | 18-19 | 66 | 4.8% | <0.001 | 0 | 0.0% | <0.001 | 23 | 13.0% | <0.001 |
| 20-24 | 230 | 16.9% | 70 | 38.5% | 64 | 36.2% | ||||
| 25-29 | 220 | 16.1% | 36 | 19.8% | 46 | 26.0% | ||||
| 30-34 | 288 | 21.1% | 18 | 9.9% | 18 | 10.2% | ||||
| 35-39 | 246 | 18.0% | 19 | 10.4% | 8 | 4.5% | ||||
| 40-44 | 87 | 6.4% | 13 | 7.1% | 12 | 6.8% | ||||
| 45-49 | 85 | 6.2% | 9 | 4.9% | 0 | 0.0% | ||||
| 50-54 | 53 | 3.9% | 10 | 5.5% | 6 | 3.4% | ||||
| ≥55 | 89 | 6.5% | 7 | 3.8% | 0 | 0.0% | ||||
| Jaw | Lower | 714 | 52.3% | 0.019 | 115 | 63.2% | <0.001 | 108 | 61.0% | 0.003 |
| Upper | 650 | 47.7% | 67 | 36.8% | 69 | 39.0% | ||||