Kwok, CS, Al-Dokheal, M, Aldaham, S, Rushton, C, Butler, R, Kinnaird, T, Zaman, A, Zaman, MJ, Timmis, A and Mamas, MA (2019) Weekend effect in acute coronary syndrome: A meta-analysis of observational studies. European Heart Journal: Acute Cardiovascular Care, 8 (5). pp. 432-442. ISSN 2048-8734

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The effect of a weekend compared with a weekday hospital admission on patient outcomes after an acute coronary syndrome is unclear. This study aims to determine whether collectively there is a weekend effect in acute coronary syndrome.

We conducted a systematic review and meta-analysis of cohort studies examining the association between weekend compared to weekday admission at any time of the day and early mortality (in-hospital or 30-day). A search was performed on Medline and Embase and relevant studies were pooled using random effects meta-analysis for risk of early mortality. Additional analyses were performed considering only more recent studies (conducted after 2005) and by patient group (ST-elevation myocardial infarction [STEMI] or non-STEMI [NSTEMI]), as well as meta-regression according to starting year and mean year of study.

A total of 18 studies were included with over 14 million participants incorporating 3 million weekend and over 11.5 million weekday admissions and the rates of mortality were 19.2% and 23.4%, respectively. The pooled results of all 18 studies suggest that weekend admission was associated with a small increased risk of early mortality (odds ratio [OR] 1.06, 95% confidence interval [CI] 1.03-1.09). The results for subgroups of STEMI and NSTEMI cohorts were not statistically significant and timing of admission after 2005 had minimal influence on the results (OR 1.06, 95% CI 0.95-1.17).

There is a small weekend effect for admission with acute coronary syndrome that has persisted over time.

Item Type: Article
Additional Information: This is the accepted author manuscript (AAM). The final published version (version of record) is available online via Sage Publications at - please refer to any applicable terms of use of the publisher.
Uncontrolled Keywords: acute coronary syndrome; weekend; mortality; meta-analysis
Subjects: R Medicine > R Medicine (General)
R Medicine > RC Internal medicine > RC666 Diseases of the circulatory (Cardiovascular) system
Divisions: Faculty of Medicine and Health Sciences > Institute for Applied Clinical Sciences
Related URLs:
Depositing User: Symplectic
Date Deposited: 12 Mar 2018 15:54
Last Modified: 09 Sep 2019 09:34

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