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Incidence of subarachnoid haemorrhage
- Source :
- JOURNAL OF NEUROLOGY NEUROSURGERY AND PSYCHIATRY, 78(12), 1365-1372. BMJ PUBLISHING GROUP
- Publication Year :
- 2007
- Publisher :
- BMJ PUBLISHING GROUP, 2007.
-
Abstract
- Background and aim: To update our 1996 review on the incidence of subarachnoid haemorrhage (SAH) and assess the relation of incidence with region, age, gender and time period.Methods: We searched for studies on the incidence of SAH published until October 2005. The overall incidences with corresponding 95% confidence intervals were calculated. We determined the relationship between the incidence of SAH and determinants by means of univariate Poisson regression.Results: We included 51 studies (33 new), describing 58 study populations in 21 countries, observing 45 821 896 person-years. Incidences per 100 000 person-years were 22.7 (95% CI 21.9 to 23.5) in Japan, 19.7 (18.1 to 21.3) in Finland, 4.2 (3.1 to 5.7) in South and Central America, and 9.1 (8.8 to 9.5) in the other regions. With age category 45-55 years as the reference, incidence ratios increased from 0.10 (0.08 to 0.14) for age groups younger than 25 years to 1.61 (1.24 to 2.07) for age groups older than 85 years. The incidence in women was 1.24 (1.09 to 1.42) times higher than in men; this gender difference started at age 55 years and increased thereafter. Between 1950 and 2005, the incidence decreased by 0.6% (1.3% decrease to 0.1% increase) per year.Conclusions: The overall incidence of SAH is approximately 9 per 100 000 person-years. Rates are higher in Japan and Finland and increase with age. The preponderance of women starts only in the sixth decade. The decline in incidence of SAH over the past 45 years is relatively moderate compared with that for stroke in general.
- Subjects :
- Adult
Male
Paper
HORMONAL FACTORS
medicine.medical_specialty
Subarachnoid hemorrhage
NEW-ZEALAND
Poison control
INTRACRANIAL ANEURYSMS
Aneurysm, Ruptured
STROKE INCIDENCE
symbols.namesake
Age Distribution
30-DAY CASE-FATALITY
Injury prevention
medicine
Humans
COMMUNITY STROKE
COMPUTED-TOMOGRAPHY
Poisson regression
Sex Distribution
Stroke
IZUMO CITY
Aged
Demography
Aged, 80 and over
business.industry
Incidence (epidemiology)
Incidence
Intracranial Aneurysm
Middle Aged
Subarachnoid Hemorrhage
medicine.disease
Confidence interval
Surgery
Psychiatry and Mental health
symbols
RISK-FACTORS
Subarachnoid haemorrhage
Female
Neurology (clinical)
Seasons
TRANSIENT ISCHEMIC ATTACKS
business
Subjects
Details
- Language :
- English
- ISSN :
- 1468330X and 00223050
- Volume :
- 78
- Issue :
- 12
- Database :
- OpenAIRE
- Journal :
- Journal of Neurology, Neurosurgery and Psychiatry
- Accession number :
- edsair.doi.dedup.....ec3f6cf355c4dd5e6e96260e3b870f8f