High risk clinical characteristics for subarachnoid haemorrhage in patients with acute headache: prospective cohort study.
Perry
Jeffrey J
JJ
Department of Emergency Medicine, University of Ottawa and Ottawa Hospital Research Institute, Ottawa, Ontario, Canada K1Y 4E9. jperry@ohri.ca
Stiell
Ian G
IG
Sivilotti
Marco L A
ML
Bullard
Michael J
MJ
Lee
Jacques S
JS
Eisenhauer
Mary
M
Symington
Cheryl
C
Mortensen
Melodie
M
Sutherland
Jane
J
Lesiuk
Howard
H
Wells
George A
GA
D000208:Acute Disease; D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D020773:Headache Disorders / Q000209:etiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D015588:Observer Variation; D011379:Prognosis; D011446:Prospective Studies; D012307:Risk Factors; D013345:Subarachnoid Hemorrhage / Q000150:complications*; D055815:Young Adult