Receiver operator characteristic curve (ROC) analysis for symmetry indexes and gait profile score. Legend: ROC = receiver operating curve; AUC = area under curve; CI = confidence interval; SI = symmetry index; GPS = gait profile score; PPV = positive predictive value; NPV = negative predictive value.
|Optimal criterion||Sensitivity (95% CI)||Specificity
|SI stride length (cm)||0.87||5.69||0.75||0.92||0.90||0.79||p < 0.001|
|SI stance phase (%)||0.85||3.64||0.75||0.92||0.90||0.70||p < 0.001|
|SI swing phase (%)||0.87||4.99||0.83||0.92||0.91||0.85||p < 0.001|
|SI double support (%)||0.83||9.81||0.75||0.83||0.82||0.77||p < 0.001|
|GPS (°)||0.83||6.30||0.67||1.00||1.00||0.75||p < 0.001|
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