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Table 1 Results of statistical analysis of TRACE and its individual items

From: TRACE (Trunk Aesthetic Clinical Evaluation), a routine clinical tool to evaluate aesthetics in scoliosis patients: development from the Aesthetic Index (AI) and repeatability

  Kappa statistics range Percent of agreement 95% level of agreement (range) Minimum Significant Change
  Intra-raters Inter-raters Intra-raters Inter-raters Intra-raters Inter-raters Intra-raters Intra-raters
TRACE 0.16–0.24 0.09–0.14 28.8–36.3 18.8–36.1 2/12 (99.4–96.9%) 3/12 (95.0–100%) 3/12 4/12
Shoulders 0.29–0.43 0.16–0.25 51.3–70.6 48.8–70.6 1/4 (96.9–100%) 1/4 (92.5–100%) 2/4 2/4
Scapulae 0.43–0.58 0.41–0.50 76.9–79.4 70.6–80.0 1/3 (99.4–100%) 1/3 (100–100%) 2/3 2/3
Hemi-thorax 0.22–0.41 0.12–0.20 58.8–63.1 50.6–63.1 1/3 (98.1–99.4%) 1/3 (95.6–99.4%) 2/3 2/3
Waist 0.40–0.48 0.07–0.11 55.0–68.0 24.4–68.1 1/5 (95.6–99.4%) 2/5 (98.7–100%) 2/5 3/5