Table 3.

Reasons for False-Positive Episodes of Acute Hemorrhagic Stroke (N = 111)

Reason	n (%)
Hemorrhagic transformation of AIS	59 (53.2)
Subacute, chronic, or remote SAH or ICH	24 (21.6)
Subdural hemorrhage	1 (0.9)
Acute hemorrhagic stroke as a tentative diagnosis but excluded by studies	3 (2.7)
Other diagnoses miscoded as acute hemorrhagic stroke	24 (21.6)

Abbreviations: AIS, acute ischemic stroke; ICH, intracerebral hemorrhage; SAH, subarachnoid hemorrhage.