title: The incidence of aneurysmal subarachnoid hemorrhage in youngdong district, Korea.
abstract: OBJECTIVE
  The purpose of this study is to investigate the incidence of aneurysmal subarachnoid hemorrhage (SAH) in Youngdong district for 10 years.
  
  
  METHODS
  From Jan. 1997 to Dec. 2006, 732 patients (327 males, 405 females, mean age: 54.8+/-13.1 years) with spontaneous SAH were admitted to our hospital. We reviewed the medical records and radiological findings regarding to the ictus of SAH, location and size of the ruptured aneurysms, Hunt-Hess grade and Fisher grade on admission, personal details such as address, age, and sex, and previous history of medical diseases.
  
  
  RESULTS
  In these 732 patients, 672 cases were confirmed as aneurysmal SAH. Among them, 611 patients (262 males, 349 females, mean age: 54.9+/-13.2 years) came from Youngdong district. The average crude annual incidence of aneurysmal SAH for men, women, and both sexes combined in Youngdong district was 7.8+/-1.7, 10.5+/-2.7, and 9.1+/-2.1 per 100,000 population, respectively. Because of the problems related to the observation period and geographical confinement, it was suspected that the representative incidence of aneurysmal SAH in Youngdong district should be made during the later eight years in six coastal regions. Therefore, the average age-adjusted annual incidence for men, women, and both sexes combined was 8.8+/-1.4, 11.2+/-1.3 and 10.0+/-1.0, respectively in the coastal regions of Youngdong district from 1999 to 2006.
  
  
  CONCLUSIONS
  In overall, our results on the incidence of aneurysmal SAH was not very different from previous observations from other studies.
authors.affiliation: Department of Neurosurgery, Gangneung Asan Hospital, College of Medicine, Ulsan University, Gangneung, Korea.
authors.forename: Hyoung Soo
authors.initials: HS
authors.lastname: Lee
authors.forename: Young June
authors.initials: YJ
authors.lastname: Kim
authors.forename: Seung Hoon
authors.initials: SH
authors.lastname: You
authors.forename: Yeon Gyu
authors.initials: YG
authors.lastname: Jang
authors.forename: Woo Tack
authors.initials: WT
authors.lastname: Rhee
authors.forename: Sang Youl
authors.initials: SY
authors.lastname: Lee