Identification of ruptured intracranial aneurysms using the aneurysm-specific prediction score in patients with multiple aneurysms with subarachnoid hemorrhages- a Chinese population based external validation study

Table 2 Diagnostic accuracy of the morphological characteristics of the IAs and the aneurysm-specific prediction score

Morphological characteristics	Results		Total	SEN%	SPE%	β%	α%	DA%
Morphological characteristics	UIA	RIA	Total	SEN%	SPE%	β%	α%	DA%
Maximum diameter (mm)
Yes	25	109	134	81.3	83.9	18.7	16.1	82.8
No	131	25	156
Shape
Irregular	36	95	131	70.9	76.9	29.1	23.1	74.1
Regular	120	39	159
Location
PC	10	5	15	3.7	93.6	96.3	6.4	51.4
AcomA + AA	16	24	40	17.9	89.7	82.1	10.3	56.6
PcomA	38	63	101	47.0	75.6	53.0	24.4	62.4
MCA	52	33	85	24.6	66.7	75.4	33.3	47.2
ICA	40	9	49	6.7	74.4	93.3	25.6	43.1
Aneurysm-specific prediction score
Largest	17	117	134	87.3	89.1	12.7	10.9	88.3
Nonlargest	139	17	156
Total	156	134	290

IA Intracranial aneurysm, SEN Sensitivity, SPE Specificity, β False omission rate, α Diagnostic error rate, Da Diagnostic accuracy, UIA Unruptured intracranial aneurysm, RIA Ruptured intracranial aneurysm, PC Posterior circulation, AcomA Anterior communicating artery, AA Anterior cerebral artery, ICA Internal carotid artery, MCA Middle cerebral artery, PcomA Posterior communicating artery

ISSN: 1471-2377