Table 4.
Criterion validity
| Reference score | Mean | SD | Total | Spearman’s correlation coefficients (95% CI) | |||||
|---|---|---|---|---|---|---|---|---|---|
| Pain | Function | Emotional acceptance | Support | Walking | Gait | ||||
| TESS | 86.7 | 16.5 | 0.81*** (0.73–0.87) |
0.39*** (0.22–0.55) |
0.73*** (0.63–0.81) |
0.45*** (0.28–0.59) |
0.63*** (0.49–0.73) |
0.69*** (0.57–0.78) |
0.72*** (0.62–0.80) |
| SF-36 (physical component summary) | 44.7 | 16.5 | 0.68*** (0.56–0.77) |
0.33*** (0.14–0.49) |
0.65*** (0.52–0.75) |
0.34*** (0.16–0.50) |
0.61*** (0.47–0.72) |
0.62*** (0.48–0.72) |
0.62*** (0.48–0.72) |
| SF-36 (mental component summary) | 52.8 | 9.1 | 0.043 (−0.15 to 0.24) |
0.021 (−0.17 to 0.22) |
−0.07 (−0.26 to 0.13) |
0.17 (−0.02 to 0.36) |
−0.12 (−0.31 to 0.08) |
−0.01 (−0.20 to 0.19) |
−0.065 (−0.26 to 0.13) |
| SF-36 (physical functioning) | 48.6 | 19.2 | 0.66*** (0.54–0.76) |
0.30** (0.12–0.47) |
0.62*** (0.48–0.73) |
0.35*** (0.16–0.50) |
0.57*** (0.42–0.69) |
0.59*** (0.44–0.70) |
0.63*** (0.50–0.74) |
| SF-36 (role physical) | 44.4 | 13.4 | 0.62*** (0.48–0.73) |
0.33** (0.15–0.50) |
0.53*** (0.37–0.66) |
0.31** (0.12–0.48) |
0.52*** (0.36–0.65) |
0.54*** (0.39–0.67) |
0.52*** (0.36–0.65) |
| SF-36 (bodily pain) | 50.7 | 9.1 | 0.52*** (0.36–0.65) |
0.41*** (0.23–0.56) |
0.46*** (0.29–0.60) |
0.27** (0.08–0.44) |
0.42*** (0.24–0.57) |
0.49*** (0.32–0.62) |
0.41*** (0.24–0.56) |
| SF-36 (general health) | 51 | 9.4 | 0.31** (0.12–0.47) |
0.20 (0.01–0.38) |
0.20 (0.002–0.38) |
0.26** (0.07–0.44) |
0.19 (−0.01 to 0.37) |
0.32** (0.13–0.48) |
0.24* (0.05–0.41) |
| SF-36 (vitality) | 51.1 | 8.9 | 0.33** (0.15–0.49) |
0.12 (−0.08 to 0.30) |
0.29** (0.10–0.45) |
0.23* (0.04–0.41) |
0.21* (0.02–0.39) |
0.24* (0.05–0.42) |
0.29** (0.10–0.46) |
| SF-36 (social functioning) | 47.6 | 12.2 | 0.58*** (0.44–0.70) |
0.23** (0.11–0.46) |
0.45*** (0.28–0.59) |
0.43*** (0.28–0.58) |
0.43*** (0.26–0.58) |
0.49*** (0.32–0.62) |
0.47*** (0.30–0.61) |
| SF-36 (role emotional) | 46.8 | 12.4 | 0.47*** (0.30–0.61) |
0.22* (0.02–0.39) |
0.41*** (0.23–0.56) |
0.23* (0.37–0.41) |
0.47*** (0.29–0.61) |
0.43*** (0.25–0.57) |
0.39*** (0.21–0.54) |
| SF-36 (mental health) | 51.7 | 9 | 0.25* (0.05–0.42) |
0.11 (−0.09 to 0.30) |
0.11 (−0.08 to 0.30) |
0.27** (0.26–0.58) |
0.06 (−0.14 to 0.24) |
0.18 (−0.02 to 0.36) |
0.13 (−0.06 to 0.32) |
TESS = Toronto Extremity Salvage Score; *0.05 > p ≥ 0.01; ** 0.01 > p ≥ 0.001; *** p < 0.001.