Figure 7 | Scientific Reports

Figure 7

From: Estimation of patient-reported outcome measures based on features of knee joint muscle co-activation in advanced knee osteoarthritis

Figure 7

Performance outcomes of a machine-learning regression model in estimating the severity of functional limitations based on Patient-Reported Outcome Measures (PROMs) using an RForest regression algorithm with EMG features. The figure depicts the regression line (red) and scatter plot (blue) showcasing the machine learning predictions versus actual PROMs score for (a) WOMAC total, (b) WOMAC pain, (c) WOMAC stiffness, (d) WOMAC physical function, and (e) VAS scores. CCI: co-contraction index, RF: rectus femoris, MH: medial hamstring, TA: tibialis anterior, G: gastrocnemius, A: Average, MAX: maximum, MIN: minimum, ST: stance phase, SW: swing phase, T: time latency, AUC: area under the curve; VAS, visual analog scale; WOMAC, Western Ontario and McMaster Universities Osteoarthritis index; EMG, electromyography.

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