ABPI against Colour Duplex Scan: A Screening Tool for Detection of Peripheral Arterial Disease in Low Resource Setting Approach to Validation

Table 4

Validity of the ABPI of 0.89 as an indicator of PAD.

Cutoff value	Sensitivity	Specificity	PPV	NPV	LR+	LR−
0.89	87.0%	99.1%	98.9%	88.4%	96.6	0.13

PPV: positive predictive value, NPV: negative predictive value, LR+: likelihood ratio positive, and LR −: likelihood ratio negative.