Table 4:
Evaluation of Patient and Treatment Characteristics in Relation to the EARR Diagnosis in the Caucasian Population
| Variable | EARR (N=43) |
Controls (N=101) |
Significance (p-value) |
|---|---|---|---|
| Sex, (N, %) | 0.66 | ||
| Female | 23 (53.5%) | 50 (49.5%) | |
| Male | 20 (46.5%) | 51(50.5%) | |
| Age (years, SD) | 13.3 (2.0) | 16.2 (9.4) | 0.43 |
| Dental Classification (N, %) | 0.03* | ||
| Class I | 13 (30.2%) | 53 (52.5%) | |
| Class II | 24 (55.8%) | 43 (42.5%) | |
| Class III | 6 (14.0%) | 5(5.0%) | |
| Skeletal Classification (N, %) | 0.14 | ||
| Class I | 19 (44.2%) | 53 (52.5%) | |
| Class II | 19 (44.2%) | 45 (44.5%) | |
| Class III | 5(11.6%) | 3 (3.0%) | |
| ANB (°, SD) | 2.2 (3.5) | 2.6 (2.5) | 0.56 |
| U1-SN (°, SD) | 105.2 (16.1) | 104.3 (9.1) | 0.72 |
| Overjet (mm, %) | 4.6 (3.8) | 4.4(2.1) | 0.67 |
| Treatment Type (N, %) | 0.02* | ||
| Non-extraction | 34 (79.1%) | 95 (94.0%) | |
| Upper premolar extraction | 6 (14.0%) | 3 (3.0%) | |
| Upper/lower premolar extraction | 3(6.9%) | 3 (3.0%) | |
| Treatment Time (months) | 20.2 (6.2) | 19.5 (7.1) | 0.61 |
SD: standard deviation; *p<0.05