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Table 6 Correlations between SF-36 total score and sub-scores and maximum gait speed. Excluding the MS patients changed the following: Total SF-36 and T1 with stimulation OFF: r = 0.29, p = 0.083, N = 37. SF-36-P and T1 with stimulation OFF: r = 0.28, p = 0.093, N = 37. SF-36-E and T2 with stimulation ON: r = 0.30, p = 0.073, N = 37. SF-36-E and T1 with stimulation OFF: r = 0.25, p = 0.13, N = 37; SF-36-E. * = p < 0.05

From: Long-term outcomes of semi-implantable functional electrical stimulation for central drop foot

QoL T1 (Stimulation OFF) T2 (Stimulation ON) T3 (Stimulation ON)
Total SF-36 r = 0.37 r = 0.50 r = 0.38
p = 0.018* p = 0.001* p = 0.020*
N = 40 N = 40 N = 39
SF-36-P r = 0.36 r = 0.39 r = 0.21
p = 0.022* p = 0.013* p = 0.19
N = 40 N = 40 N = 39
Pain score r = 0.12 r = − 0.18 r = − 0.11
p = 0.44 p = 0.27 p = 0.49
N = 40 N = 40 N = 39
SF-36-E r = 0.33 r = 0.32 r = 0.37
p = 0.038* N = 40 p = 0.023*
N = 40 p = 0.043* N = 39
Health change r = − 0.028 r = 0.23 r = − 0.055
p = 0.87 p = 0.15 p = 0.74
N = 40 N = 40 N = 39