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Table 2 Intermethod agreement for all combinations between the four tested methods

From: Tibial torsion analysis in computed tomography: development and validation of a real 3D measurement technique

Intermethod agreement

ICC (95% CI)

Mean value, t test

Jakob vs. Goutallier

0.996 (0.994–0.998)

30.1 vs. 24.1° (p < 0.001)

MD: 5.9 ± 2.6° (range 0.3–12.7°)

Jakob vs. 3D-TF

0.783 (0.684–0.853)

30.1 vs. 28.1° (p = 0.033)

MD: 2.0 ± 8.5° (range − 23.5–24.6°)

Jakob vs. 3D-T

0.715 (0.481–0.834)

30.1 vs. 25.2° (p < 0.001)

MD: 4.9 ± 9.6° (range − 16.4–26.3°)

Goutallier vs. 3D-TF

0.795 (0.681–0.868)

24.1 vs. 28.1 (p < 0.001)

MD: − 3.9 ± 8.7° (range − 31.6–16.6°)

Goutallier vs. 3D-T

0.729 (0.581–0.825)

24.1 vs. 25.2 (p = 0.348)

 − 1.0 ± 9.9° (range − 24.5–19.9°)

3D-TF vs. 3D-T

0.950 (0.860–0.977)

28.1 vs. 25.2° (p < 0.001)

MD: 2.9 ± 4.5° (range − 10.2–12.0°)

  1. ICC intraclass correlation coefficients, CI confidence interval, MD mean difference