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Table 2.

Diagnostic accuracy of the acoustic analysis using Patterns A and B.

Value 95% confidence interval
Pattern B for the subsidence
 Sensitivity 0.65 0.443–0.812
 Specificity 0.69 0.628–0.746
 PPV 0.41 0.279–0.511
 NPV 0.86 0.775–0.924
Pattern A for the clinical course without adverse events*
 Sensitivity 0.69 0.623–0.747
 Specificity 0.68 0.493–0.833
 PPV 0.86 0.771–0.924
 NPV 0.45 0.323–0.546

PPV: positive predictive value, NPV: negative predictive value.

*

Adverse events; intraoperative fracture, subsidence.

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