Table 1.

Risk of DVT/PE for the different diagnoses. The relative risk of DVT/PE is normalized so that the risk for the stroke patients is 1.0.

Diagnosis	#Patients Without DVT/PE	#Patients With DVT/PE	Total Number Patients	% Patients With DVT/PE	Relative risk DVT/PE (ischemic stroke=1)
Subarachnoid Hemorrhage	183	6	189	3.1%	2.69
Ischemic stroke	1317	16	1333	1.2%	1
Transient Ischemic Attack	697	3	700	0.42%	0.35
Intracranial Hemorrhage	264	8	272	2.9%	2.5

χ²=14.8 df=3 p=0.002 (2 sided)