Table 2.

ICDSC test results in aphasic and non-aphasic patients at given cut-off values.

			DSM-V		PPV	NPV	TPR	TNR	κ
			+	–
Patients with aphasia (n = 231)	ICDSC ≥ 4	+	81	66	55% [50.6–59.6]	98% [91.2–99.4]	98% [91.6–99.7]	55% [47.02–63.6]	0.45
		–	2	82
	ICDSC ≥ 5	+	75	37	67% [60.3–72.9]	93% [87.7–96.4]	90% [81.9–95.8]	75% [67.2–81.8]	0.61
		–	8	111
	ICDSC ≥ 6	+	62	18	78% [68.7–84.4]	86% [81.0–90.0]	75% [63.9–83.6]	88% [81.5–93.6]	0.63
		–	21	130
Patients without aphasia (n = 115)	ICDSC ≥ 3	+	32	29	52% [45.1–59.7]	100%	100% [89.1–100]	65% [53.8–75.2]	0.51
		–	0	54
	ICDSC ≥ 4	+	32	18	64% [54.2–72.8]	100%	100% [89.1–100]	78% [67.9–86.6]	0.67
		–	0	65
	ICDSC ≥ 5	+	26	7	79% [64.2–88.5]	93% [86.0–96.3]	81% [63.6–92.8]	92% [83.4–96.5]	0.72
		–	6	76
	ICDSC ≥ 6	+	17	3	85% [64.0–94.8]	84% [78.6–88.6]	53% [34.7–70.9]	96% [89.8–99.3]	0.56
		–	15	80

95% confidence intervals are reported in square brackets. PPV, positive predictive value; NPV, negative predictive value; TPR, true positive rate or sensitivity; TNR, true negative rate or specificity; κ, Cohen's Kappa.

Bold values indicate the ICDSC cut-off values proposed by the authors.