生存系统评价的生死：方法学调查。
The life and death of living systematic reviews: a methodological survey.
机构信息
Department of Internal Medicine, American University of Beirut, Beirut, Lebanon; Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, 1280 Main Street West 2C Area, Ontario, Canada.
Infectious Disease Epidemiology Group, Weill Cornell Medicine-Qatar, Cornell University, Qatar Foundation - Education City, Doha, Qatar; World Health Organization Collaborating Centre for Disease Epidemiology Analytics on HIV/AIDS, Sexually Transmitted Infections, and Viral Hepatitis, Weill Cornell Medicine-Qatar, Cornell University, Qatar Foundation - Education City, Doha, Qatar.
出版信息
J Clin Epidemiol. 2023 Apr;156:11-21. doi: 10.1016/j.jclinepi.2023.02.005. Epub 2023 Feb 9.
OBJECTIVES
The objectives of this study are to describe the characteristics of living systematic reviews (LSRs) and to understand their life cycles.
STUDY DESIGN AND SETTING
We conducted a comprehensive search up to April 2021 then selected articles and abstracted data in duplicate and independently. We undertook descriptive analyses and calculated delay in version update and delay since the last published version.
RESULTS
We included 76 eligible LSRs with a total of 279 eligible versions. The majority of LSRs was from the clinical field (70%), was COVID-19 related (63%), and had a funding source specified (62%). The median number of versions per LSR was 2 (interquartile range (IQR) 1-4; range 1-19). The median and IQR for the ratio of the actual period of update to the planned period of update was 1.12 (0.81; 1.71). Out of all reviews with a 'planned period of update' and at least one update (N = 19), eight LSRs (42%) had a period since last published version greater than 3 times the planned period of update. No LSR included a 'retirement notice' in their latest published version.
CONCLUSION
While most LSR complied with the planned period of producing updates, a substantive proportion lagged since their last update.
目的
本研究旨在描述正在进行的系统综述（LSR）的特征，并了解其生命周期。
研究设计与设置
我们进行了全面的检索，截至 2021 年 4 月，然后对文章进行了重复和独立的选择和数据提取。我们进行了描述性分析，并计算了版本更新的延迟和上次发布版本以来的延迟。
结果
我们纳入了 76 篇符合条件的 LSR，共 279 个符合条件的版本。大多数 LSR 来自临床领域（70%），与 COVID-19 相关（63%），并指定了资金来源（62%）。每个 LSR 的版本中位数为 2 个（四分位距 (IQR) 1-4；范围 1-19）。实际更新周期与计划更新周期之比的中位数和 IQR 为 1.12（0.81；1.71）。在所有有“计划更新周期”且至少有一次更新的综述中（N=19），有 8 篇 LSR（42%）自上次更新以来的时间超过计划更新周期的 3 倍。没有 LSR 在其最新发布的版本中包含“退休通知”。
结论
虽然大多数 LSR 符合制作更新计划的周期，但相当一部分 LSR 自上次更新以来已经滞后。
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