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Effects of 14 days of percutaneous peripheral nerve stimulation on opioid consumption (oral morphine equivalents). For the opioid consumption within 24 hours at each time point, P values were estimated from Wilcoxon rank test (skewed data) stratified by surgical location. Data expressed as median (dark horizontal bars) with 25th–75th (box), 10th–90th (whiskers), mean (diamonds), and outliers (circles).
