Table 3.
Association of the patient and treatment-related factors to moderate/severe EARR.
| EARR | No EARR | P-value | Odds ratio (95% CI) |
|
|---|---|---|---|---|
| Nominal Factors | N (%) | N (%) | ||
| Gender | .31 | |||
| Female | 55 (27.6%) | 144 (72.4%) | RG | |
| Male | 45 (32.8%) | 92 (67.2%) | 0.781 (0.487–1.253) | |
| Dental Classification | .78 | |||
| Class I | 63 (30.1%) | 146 (69.9%) | RG | |
| Class II | 28 (27.7%) | 73 (72.3%) | 0.899 (0.525–1.505) | |
| Class III | 9 (34.6%) | 17 (65.4%) | 1.227 (0.519–2.900) | |
| Skeletal Classification | .84 | |||
| Class I | 24 (31.6%) | 52 (68.4%) | RG | |
| Class II | 69 (28.9%) | 170 (71.1%) | 0.879 (0.503–1.538) | |
| Class III | 7 (33.3%) | 14 (66.7%) | 1.083 (0.387–3.029) | |
| Treatment Type | .18 | |||
| Extraction | 27 (36.0%) | 48 (64%) | 1.449 (0.841–2.495) | |
| Non-extraction | 73 (28.0%) | 188 (72%) | RG | |
| Continuous Factors | Mean (SD) | Mean (SD) | ||
| Age (years) | 17.7 (9.4) | 17.6 (9.8) | .93 | 1.001 (0.977–1.025) |
| ANB (°) | 4.5 (3.0) | 4.7 (2.8) | .45 | 0.968 (0.892–1.052) |
| Overjet (°) | 3.9 (2.3) | 4.0 (2.4) | .67 | 0.978 (0.885–1.081) |
| U1-SN (°) | 112.6 (8.1) | 111.0 (8.0) | .0.8 | 1.027 (0.997–1.059) |
| IMPA (°) | 98.2 (7.5) | 98.0 (7.8) | .80 | 1.004 (0.974–1.035) |
| Treatment Time (months) | 29.0 (8.8) | 28.4 (9.0) | .53 | 1.008 (0.982–1.035) |
CI, confidence interval; RG, reference group; SD, standard deviation.