Table 3.
Association between Lunge Test Scores and Self-Report Measures of Function
| Scoring strategy; Pearson correlation coefficient (95% CI) |
||||
|---|---|---|---|---|
| Affected only (LTAff) |
Unaffected-affected (LTDiff) |
|||
| Type of validity | 1st test | Mean of 3 tests | 1st test | Mean of 3 tests |
| Cross-sectional* | ||||
| LEFS | 0.18 (−0.10–0.43) | 0.18 (−0.10–0.43) | −0.40 (−0.61 to −0.15) | −0.42 (−0.62 to −0.17) |
| GFAS | 0.20 (−0.08–0.45) | 0.20 (−0.08–0.45) | −0.47 (−0.66 to −0.23) | −0.50 (−0.68 to −0.27) |
| Longitudinal† | ||||
| LEFS | 0.59 (0.35–0.76) | 0.57 (0.33–0.74) | 0.59 (0.35–0.76) | 0.63 (0.41–0.78) |
| GFAS | 0.41 (0.13–0.63) | 0.39 (0.10–0.62) | 0.55 (0.30–0.73) | 0.59 (0.35–0.75) |
| Sensitivity to change‡ | 0.54 (0.29–0.72) | 0.56 (0.31–0.74) | 0.33 (0.03–0.57) | 0.40 (0.11–0.63) |
*
Correlation between Time 1 values (n=53).
†
Correlation between change scores (n=43).
‡
Correlation between change scores and Time 2 global ratings of change (n=43).
LT=Lunge Test; LEFS=Lower Extremity Functional Scale; GFAS=American Academy of Orthopaedic Surgeons Global Foot and Ankle Scale.