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Table 3 Intra-rater agreement of the US measurement and agreement scores between US and CT measurements

From: Repeatability and agreement of ultrasonography with computed tomography for evaluating forefoot structure in the coronal plane

       Limits of agreement (95% CI)
  ICC1,1 (95% CI) ICC3,1 (95% CI) r Mean (95% CI) Difference (95% CI) Lower Upper
2nd MTH height (mm) 0.88 (0.79, 0.92) 0.83 (0.74, 0.90) 0.80 21.13 (20.49, 21.77) −0.18 (0.39, 1.53) −3.24 (−3.63,−2.86) 2.88 (3.27, 2.49)
MS-5thMTH length (mm) 0.92 (0.87, 0.95) 0.81 (0.70, 0.89) 0.79 63.05 (62.32, 63.78) −0.78 (−1.27,−0.32) −4.55 (−5.02,−4.07) 2.98 (2.48, 3.43)
TAH (mm) 0.84 (0.74, 0.90) 0.86 (0.78, 0.91) 0.86 13.26 (0.52, 2.06) 0.36 (0.64, 0.08) −1.90 (−1.61,−2.18) 2.62 (2.33, 2.90)
TAI (%) 0.87 (0.80, 0.92) 0.85 (0.78, 0.91) 0.84 21.08 (20.23, 21.94) 0.86 (−2.94, 4.66) −2.94 (−3.42,−2.46) 4.66 (4.18, 5.14)
SRA (°) 0.85 (0.76, 0.91) 0.89 (0.83, 0.93) 0.90 16.03 (14.15, 17.91) 0.19 (−0.71, 1.09) −6.90 (−7.80,−6.00) 7.27 (6.38, 8.17)
AUTA (mm2) 0.86 (0.78, 0.92) 0.78 (0.66, 0.86) 0.78 849.27 (822.76, 875.78) 94.82 (76.32, 113.32) −51.39 (−69.89,−32.89) 241.03 (222.53, 259.52)
  1. Abbreviations: ICC inter-class correlation coefficient, CI confidence interval, r Pearson correlation coefficient, MTH metatarsal head, MS-5thMTH length the length between the medial sesamoid bone and 5th metatarsal head, TAH transverse arch height, TAI transverse arch index, SRA sesamoid rotation angle, AUTA area under the transverse arch, US ultrasonography, CT computed tomography