Table 4.

Selectivity and specificity of ABI < 0.9 and the best ABI cut-off value by baPWV quartile

Quartile (Best Cut-Off)	<0.9		<Best ABI Cut-Off
	Sensitivity	Specificity	Sensitivity	Specificity
Quartile 1 (1.00)	76.9 (46.2 to 95.0)	95.1 (88.1 to 99.6)	84.6 (54.6 to 98.1)	91.4 (81.0 to 97.1)
Quartile 2 (1.05)	40.0 (12.2 to 73.8)	89.7 (94.1 to 100.0)	70.0 (34.8 to 9.30.3)	96.7 (88.7 to 99.6)
Quartile 3 (1.10)	31.3 (11.0 to 58.7)	90.9 (84.9 to 98.9)	68.8 (41.3 to 89.0)	81.8 (69.1 to 90.9)
Quartile 4 (1.05)	54.6 (36.4 to 69.2)	96.2 (90.8 to 100.0)	84.9 (68.1 to 93.0)	89.5 (75.2 to 93.5)