Skip to main content

Table 5 Differences in mean error, mean absolute error, and root mean squared error; between Willems et al. (BC) method and Willems et al. (SA) method

From: Age estimation based on Willems method versus country specific model in Saudi Arabia children and adolescents

Sex N § Mean (CI%) SD P
M + F 1146 Error Willems et al. BC method 0.02 1.77  
Error Willems et al. SA method 0.00 1.80  
Difference 0.02 0.55 0.1183
Absolute error Willems et al. BC method 1.33 1.16  
Absolute error Willems et al. SA method 1.37 1.18  
Difference − 0.03 0.52 0.1775
RMSE Willems et al. BC method 1.778 (1.71;1.85)   
RMSE Willems et al. SA method 1.803 (1.74;1.87)   
F 605 Error Willems et al. BC method. 0.05 1.78  
Error Willems et al. SA method 0.00 1.81  
Difference 0.04 0.60 0.0107
Absolute error Willems et al. BC method 1.32 1.20  
Absolute error Willems et al. SA method 1.37 1.18  
Difference − 0.05 0.55 0.0927
RMSE Willems et al. BC method 1.800 (1.70;1.90)   
RMSE Willems et al. SA method 1.809 (1.71;1.91)   
M 541 Error Willems et al. BC method. − 0.01 1.76  
Error Willems et al. SA method 0.00 1.80  
Difference − 0.01 0.51 0.2690
Absolute error Willems et al. BC method 1.35 1.13  
Absolute error Willems et al. SA method 1.37 1.17  
Difference − 0.02 0.49 0.5646
RMSE Willems et al. BC method 1.758 (1.67;1.85)   
RMSE Willems et al. SA method 1.799 (1.71;1.89)   
  1. Willems SA method newly constructed dental age estimation method using the Willems et al. [3] methodology on a Saudi Arabian reference database and validated. RMSE: root mean squared error; CI%: 95 % confidence intervals for the RMSE are given between brackets; N: number; M: male; F: Female; SD: standard deviation, P: P-value from Wilcoxon signed rank test comparing Absolute error Willems et al. and Absolute error Willems SA method