Table 5.

Linear regression analysis between SSDE_center and $\overline{\text{SSDE}}$ and the resulting coefficients of linear regression models (${\overline{\text{SSDE}}}_{\text{center}}=\text{a}\times \overline{\text{SSDE}}+\text{b}$)

Age		C	A	P	CA	AP	CAP
0–5	a	1.01	1.01	1.00	0.956	1.01	0.951
	b	0.041	0.032	−0.002	0.075	0.231	0.108
	R2	0.998	0.995	0.999	0.996	0.996	0.995
6–10	a	1.01	1.00	0.996	0.984	1.04	0.963
	b	0.087	−0.00	−0.048	−0.073	0.174	0.208
	R2	0.998	0.993	0.999	0.990	0.995	0.995
11–16	a	1.02	0.964	0.971	1.07	1.07	0.957
	b	0.012	0.856	0.481	−0.997	−0.220	0.860
	R2	0.998	0.992	0.997	0.973	0.990	0.986
0–16	a	1.01	0.993	0.988	1.03	1.06	0.981
	b	0.006	0.195	0.115	−0.605	−0.111	0.035
	R2	0.998	0.994	0.998	0.985	0.994	0.992

$\overline{\text{SSDE}}$, mean size-specific dose estimate; SSDE_center, size-specific dose estimate in the central slice of scan range; C, chest; A, abdomen; P, pelvis; CA, chest and abdomen; AP, abdomen and pelvis; CAP, chest, abdomen, and pelvis.