Table 3 Results of regression model for all data
From: Age estimation by pulp to tooth area ratio in canine teeth using cone-beam computed tomography
Variable | Unstandardized coefficients | P value | Model evaluation criteria | |||||
|---|---|---|---|---|---|---|---|---|
B | SE | R | R2 | MAE | RMSE | |||
Regression with all variable (n = 300) | Constant | 60.31 | 6.73 | 0.000 | 0.81 | 0.66 | 5.20 | 7.37 |
AR | − 311.75 | 23.79 | 0.000 | |||||
P | 30.49 | 9.52 | 0.002 | |||||
A1 | 25.14 | 15.87 | 0.114 | |||||
A2 | 53.70 | 19.23 | 0.006 | |||||
C1 | − 11.26 | 15.49 | 0.468 | |||||
C2 | 4.79 | 11.07 | 0.665 | |||||
B1 | − 45.26 | 15.97 | 0.005 | |||||
B2 | − 28.50 | 11.49 | 0.017 | |||||
Regression with forward variable selection (n = 300) | Constant | 57.88 | 5.19 | 0.000 | 0.88 | 0.77 | 4.46 | 5.89 |
AR | − 380.90 | 19.21 | 0.000 | |||||
A2 | 72.68 | 15.04 | 0.000 | |||||
B1 | − 60.17 | 11.04 | 0.000 | |||||
P | 33.15 | 7.54 | 0.000 | |||||
A1 | 30.69 | 11.83 | 0.000 | |||||