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Forest plot of 9 trials comparing the effects of any type of transcutaneous electrostimulation and control (sham or no intervention) on function. Values on x‐axis denote standardised mean differences. The plot is stratified according to type of electrostimulation. In Adedoyin 2005, the standard error was inflated and the number of patients in the control group was halved to avoid duplicate counting of patients when including both comparisons in the overall meta‐analysis.
