Table 4.

Intraclass correlation coefficients (ICCs) with 95% confidence intervals (CI), standard error of measurement (SEM), and smallest detectable change (SDC) for test-retest measurements at 3D photographs.

Parameter			ICC (95% CI)	SEM (mm)	SDC
Distances on 3D photograph (mm)	Right face	1	0.915 (0.739–0.975)	0.89 (0.6%)	2.46 (1.6%)
		2	0.922 (0.763–0.977)	0.74 (0.6%)	2.04 (1.7%)
		3	0.929 (0.782–0.979)	0.84 (0.7%)	2.32 (2.0%)
		4	0.949 (0.835–0.985)	0.51 (0.5%)	1.41 (1.3%)
		5	0.974 (0.916–0.992)	0.27 (0.2%)	0.74 (0.5%)
		6	0.925 (0.768–0.978)	0.56 (0.5%)	1.56 (1.3%)
		7	0.877 (0.638–0.963)	1.30 (1.1%)	3.59 (3.1%)
		Overall	0.985 (0.977–0.991)	0.32 (0.3%)	0.89 (0.7%)
	Left face	1	0.965 (0.887–0.990)	0.40 (0.3%)	1.12 (0.7%)
		2	0.933 (0.791–0.980)	0.69 (0.6%)	1.91 (1.6%)
		3	0.987 (0.956–0.996)	0.18 (0.2%)	0.50 (0.4%)
		4	0.877 (0.639–0.962)	1.15 (1.1%)	3.18 (3.0%)
		5	0.950 (0.837–0.985)	0.51 (0.4%)	1.40 (1.1%)
		6	0.818 (0.501–0.943)	1.44 (1.2%)	3.99 (3.4%)
		7	0.886 (0.656–0.996)	1.50 (1.3%)	4.16 (3.6%)
		Overall	0.987 (0.957–0.996)	0.33 (0.3%)	0.93 (0.8%)
	Neck circumference	Superior	0.974 (0.912–0.992)	0.77 (0.4%)	2.12 (0.6%)
		Middle	0.936 (0.794–0.981)	2.72 (0.8%)	7.53 (2.2%)
		Inferior	0.978 (0.926–0.994)	0.61 (0.3%)	1.68 (0.8%)
		Overall	0.994 (0.988–0.997)	0.56 (0.2%)	1.55 (0.5%)
	Head circumference	Diagonal	0.975 (0.915–0.993)	0.79 (0.4%)	2.20 (1.2%)
		Vertical	0.952 (0.799–0.987)	1.41 (0.7%)	3.90 (2.1%)
		Overall	0.962 (0.888–0.985)	0.26 (0.1%)	0.71 (0.4%)
	Overall		0.998 (0.998–0.999)	0.19 (0.1%)	0.52 (0.3%)
Mean distance map (mm)	Right face		0.980 (0.903–0.995)	0.02 (2.6%)	0.05 (7.4%)
	Left face		0.987 (0.975–0.996)	0.01 (1.5%)	0.04 (4.3%)
	Submental		0.974 (0.915–0.992)	0.04 (1.4%)	0.10 (4.0%)
	Neck		0.920 (0.722–0.977)	0.34 (9.2%)	0.93 (25.6%)
	Overall		0.950 (0.909–0.972)	0.15 (7.6%)	0.40 (21.1%)
Root mean square distance map	Right face		0.924 (0.761–0.977)	0.07 (5.2%)	0.20 (14.3%)
	Left face		0.974 (0.917–0.922)	0.03 (1.8%)	0.08 (4.9%)
	Submental		0.950 (0.836–0.985)	0.07 (2.4%)	0.20 (6.6%)
	Neck		0.895 (0.679–0.969)	0.53 (6.2%)	1.46 (17.2%)
	Overall		0.971 (0.950–0.984)	0.14 (3.8%)	0.39 (10.7%)
Volume difference (mL)	Right face		0.942 (0.814–0.983)	0.62 (11.7%)	1.72 (32.5%)
	Left face		0.955 (0.851–0.987)	0.53 (5.5%)	1.48 (15.3%)
	Submental		0.979 (0.928–0.994)	0.23 (1.4%)	0.64 (3.8%)
	Neck		0.905 (0.692–0.972)	5.09 (14.8%)	14.1 (41.0%)
	Overall		0.914 (0.853–0.951)	2.65 (16.0%)	7.34 (44.5%)