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Table 4 – Sensitivity and specificity analysis

From: Intraoperative electromyographic monitoring to optimize safe lumbar pedicle screw placement – a retrospective analysis

t-EMG Monitoring Breached Pedicle (n) Intact Pedicle (n) Total
Positive True positive = 14 False positive = 131 145
Negative False Negative = 1 True Negative = 1710 1711
Total 15 1841 1856
Sensitivity 93.33%  
Specificity 92.88%