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. 2018 Nov 15;10:199–203. doi: 10.2147/RRU.S178902

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© 2018 Ahmed et al. This work is published and licensed by Dove Medical Press Limited

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The Bland–Altman plots from US and NCCT limits of agreement for the stone size were between −5.659 and 5.745 and the mean difference (95% CI) was 0.043 (0.346–0.432).

Notes: The spread around the mean for the stone size showed variations across all levels, and only a few participants fell outside the limit of agreement. The mean difference was not associated with the means of the two methods, confirming the acceptable level of agreement.

Abbreviations: NCCT, non-contrast enhanced computed tomography; US, ultrasonography.