Table 3.

Specificity, sensitivity, PPV and NPV of CT-based markers (FLP and SAH) against CAA diagnosis according to pathology (A; n = 16), MRI (B; N = 11) and Pathology or MRI (C; n = 16; of which 11 had MRI)

	Specificity	Sensitivity	PPV	NPV	Accuracy
A
FLP	44%	71%	50%	67%	56%
SAH	44%	100%	58%	100%	69%
FLP or SAH	22%	100%	50%	100%	56%
FLP and SAH	67%	71%	63%	75%	69%
B
FLP	50%	67%	33%	80%	55%
SAH	38%	100%	38%	100%	55%
C
FLP	43%	67%	60%	50%	56%
SAH	57%	100%	75%	100%	81%
FLP or SAH	29%	100%	64%	100%	69%
FLP and SAH	71%	67%	75%	63%	69%