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

BMC Oral Health

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

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)

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

ISSN: 1472-6831