Does the contralateral testicular volume decide the need for diagnostic laparoscopy in cases of unilateral impalpable undescended testis?

Table 5 Validity (AUC, sensitivity, specificity) for the volume of normal side to predict the presence of the second testis

	AUC	P	95% C.I	Cut off	Sensitivity	Specificity	PPV	NPV
Volume of the normal side	0.838^*	< 0.001^*	0.744–0.931	≤ 0.674	75.0	88.89	88.2	76.2

AUC: Area Under a Curve, p-value: Probability value, CI: Confidence Intervals, NPV: Negative predictive value, PPV: Positive predictive value, *: Statistically significant at p ≤ 0.05, # Cut-off was chosen according to the Youden index

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