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. 2016 Sep 1;30(9):958–962. doi: 10.1089/end.2016.0341

Table 3.

Comparison Between Average Absolute Difference for S-Mode Stone and Shadow

		Size	Difference		Bias
	N	CT (mm)	S-mode US shadow (mm)	S-mode US stone^a(mm)	Stone shadow	p^b
All stones	56	5.5 ± 2.9	1.3 ± 1.7	1.4 ± 1.5	0.92 ± 0.25	<0.0001
≤5 mm	30	3.7 ± 0.7	0.8 ± 0.6	1.5 ± 1.0	0.78 ± 0.32	<0.0001
5–10 mm	21	6.8 ± 1.4	1.5 ± 1.0	1.0 ± 0.8	1.04 ± 0.43	<0.0001
>10 mm	4	12.9 ± 3.7	4.5 ± 5.1	3.2 ± 4.2	1.28 ± 1.06	0.019

^{^a}

Only stones that shadowed are included.

^{^b}

p > 0.05 is significant for no bias.