Table 6. Linear Regression analysis for ODI and APDI related to predictor variables.
| Measurements | Variables | R 2 | p | Beta | 95% Confidence Interval | |
| Lower limit | Upper limit | |||||
| ODI | 0.306 | <0.001* | 70.027 | 82.487 | ||
| Age | 0.330 | -0.059 | -0.151 | 0.051 | ||
| Sex | 0.718 | -0.022 | -1.723 | 1.189 | ||
| FMP | 0.012 | -0.198 | -0.432 | -0.053 | ||
| Overbite | <0.001 | 0.407 | 0.702 | 1.577 | ||
| APDI | 0.772 | <0.001* | 79.256 | 83.405 | ||
| Age | 0.817 | -0.008 | -0.060 | 0.047 | ||
| Sex | 0.004 | -0.100 | -1.897 | -0.360 | ||
| ANB | <0.001 | -0.293 | -0.891 | -0.400 | ||
| USP projection | <0.001 | -0.570 | -1.029 | -0.651 | ||
| Overjet | 0.188 | -0.063 | -0.361 | 0.071 | ||