Table 3.

Average difference (AD), 95%-limits of agreement (LoA), intraclass correlation coefficient (ICC) and Pearson correlation coefficient (PCC) of the examination results using a stationary high-end ultrasound device (SHUD) and a handheld ultrasound device (HHUD) for the 105 lesions (n), presented with 95% confidence interval (CI). Subgroup analysis for benign and malignant lesions as well as fibroadenomas and cysts as major groups of the benign lesions in regards to Intraclass Correlation Coefficient (ICC). The unit for AD and LoA is mm

		Craniocaudal	Dorsoventral	Mediolateral	Skin-to-lesion distance
AD	All (n = 105)	0.6	0.1	0.5	0.1
LoA		− 6–7.2	− 4.0–4.1	− 6.1–7.1	− 6.2–6.3
ICC (95% CI)	All (n = 105)	0.936 (0.907–0.956)	0.969 (0.954–0.979)	0.926 (0.893–0.949)	0.914 (0.875–0.941)
ICC (95% CI)	Benign (n = 65)	0.893 (0.830–0.933)	0.958 (0.932–0.974)	0.884 (0.817–0.928)	0.791 (0.679–0.867)
	Fibroadenoma (n = 22)	0.865 (0.703–0.942)	0.954 (0.892–0.981)	0.830 (0.635–0.926)	0.958 (0.901–0.982)
	Cyst (n = 32	0.929 (0.859–0.965)	0.944 (0.889–0.972)	0.872 (0.754–0.935)	0.852 (0.837–0.961)
	Malignant (n = 40)	0.978 (0.958–0.988)	0.968 (0.940–0.983)	0.950 (0.908–0.973)	0.984 (0.941–0.983)