Table 3. Diagnostic accuracy of sonography in the diagnostic work-up of children with suspected intussusception in the emergency setting, keeping surgical findings as the gold standard .

Parameter	Estimate	95% CI
Sensitivity	80.7%	73.5 to 86.3
Specificity	52.7%	39.79 to 65.31
Positive predictive value	81.8%	74.7 to 87.3
Negative predictive value	50.9%	38.3 to 63.4
Diagnostic accuracy	73%	66.46 to 78.68
Cohen's kappa (unweighted)	0.33	0.19 to 0.47