title: Weekend admission in patients with acute ischemic stroke is not associated with poor functional outcome than weekday admission.
abstract: OBJECTIVE
  Stroke requires consistent care, but there is concern over the "weekend effect", whereby a weekend admission results in a poor outcome. Our aim was to determine the impact of weekend admission on clinical outcomes in patients with acute ischemic stroke in Korea.
  
  
  METHODS
  The outcomes of patients admitted on weekdays and weekends were compared by analyzing data from a prospective outcome registry enrolling 1247 consecutive patients with acute ischemic stroke admitted to four neurology training hospitals in South Korea between September 2004 and August 2005. The primary outcome was a poor functional outcome at 3 months, defined as modified Rankin Scale (mRS) of 3-6. Secondary outcomes were 3-month mortality, use of thrombolysis, complication rate, and length of hospitalization. Shift analysis was also performed to compare overall mRS distributions.
  
  
  RESULTS
  On weekends, 334 (26.8%) patients were admitted. Baseline characteristics were comparable between the weekday and weekend groups except for more history of heart disease and shorter admission time in weekend group. Univariate analysis revealed poor functional outcome at 3 months, 3-month mortality, complication rate, and length of hospitalization did not differ between the two groups. In addition, overall mRS distributions were comparable (p=0.865). After adjusting for baseline factors and stroke severity, weekend admission was not associated with poor functional outcome at 3 months (adjusted odds ratio, 1.05; 95% CI, 0.74-1.50). Furthermore, none of secondary endpoints differed between the two groups in multivariate analysis.
  
  
  CONCLUSIONS
  Weekend admission was not associated with poor functional outcome than weekday admission in patients with acute ischemic stroke in this study. The putative weekend effect should be explored further by considering a wider range of hospital settings and hemorrhagic stroke.
authors: Department of Neurology, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea.
authors: Sang-Chul
authors: SC
authors: Kim
authors: Keun-Sik
authors: KS
authors: Hong
authors: Seon-Il
authors: SI
authors: Hwang
authors: Ji-Eun
authors: JE
authors: Kim
authors: Ah-Ro
authors: AR
authors: Kim
authors: Joong-Yang
authors: JY
authors: Cho
authors: Hee Kyung
authors: HK
authors: Park
authors: Ji-Hyun
authors: JH
authors: Park
authors: Ja-Seong
authors: JS
authors: Koo
authors: Jong-Moo
authors: JM
authors: Park
authors: Hee-Joon
authors: HJ
authors: Bae
authors: Moon-Ku
authors: MK
authors: Han
authors: Dong-Wha
authors: DW
authors: Kang
authors: Mi-Sun
authors: MS
authors: Oh
authors: Kyung-Ho
authors: KH
authors: Yu
authors: Byung-Chul
authors: BC
authors: Lee
authors: Ji-Sung
authors: JS
authors: Lee
authors: Yong-Jin
authors: YJ
authors: Cho
keywords: ischemic stroke; weekend admission; weekend effect