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When and how to update systematic reviews

  • Review
  • Methodology

Authors


Abstract

Background

Systematic reviews are most helpful if they are up-to-date. We did a systematic review of strategies and methods describing when and how to update systematic reviews.

Objectives

To identify, describe and assess strategies and methods addressing: 1) when to update systematic reviews and 2) how to update systematic reviews.

Search methods

We searched MEDLINE (1966 to December 2005), PsycINFO, the Cochrane Methodology Register (Issue 1, 2006), and hand searched the 2005 Cochrane Colloquium proceedings.

Selection criteria

We included methodology reports, updated systematic reviews, commentaries, editorials, or other short reports describing the development, use, or comparison of strategies and methods for determining the need for updating or updating systematic reviews in healthcare.

Data collection and analysis

We abstracted information from each included report using a 15-item questionnaire. The strategies and methods for updating systematic reviews were assessed and compared descriptively with respect to their usefulness, comprehensiveness, advantages, and disadvantages.

Main results

Four updating strategies, one technique, and two statistical methods were identified. Three strategies addressed steps for updating and one strategy presented a model for assessing the need to update. One technique discussed the use of the "entry date" field in bibliographic searching. Statistical methods were cumulative meta-analysis and predicting when meta-analyses are outdated.

Authors' conclusions

Little research has been conducted on when and how to update systematic reviews and the feasibility and efficiency of the identified approaches is uncertain. These shortcomings should be addressed in future research.

摘要

背景

系統性回顧更新的時機和方法

能及時更新資料的系統性回顧最有用。我們對系統性回顧更新的時機和方法的策略和方法進行系統性回顧。

目標

要找尋、敘述及評估1)何時應更新系統性回顧2)如何更新的策略和方法。

搜尋策略

我們搜尋MEDLINE (1966 年到2005年12月)、PsycINFO及Cochrane Methodology Register (Issue 1, 2006),並對the 2005 Cochrane Colloquium proceedings進行人工搜尋。

選擇標準

包含的文獻有方法學報告、更新的系統性回顧、評論、社論或其他描述發展、使用或比較健康照顧短系統性回顧更新的時機和方法的報告

資料收集與分析

每篇報告的相關資訊用一份含15題的問卷摘錄。我們評估並以描述性方法比較系統性回顧更新的時機和方法的實用性、完整性及優缺點。

主要結論

找到4個更新的策略、一種技巧以及兩個統計方法。其中三個策略討論更新的步驟,另一個提出的是更新需求的評估模型。有關技巧的研究報告﹐內容討論的是運用建立日期欄位的資料來進行文獻搜尋。統計方法分別為累積性統合分析及預測統合分析何時過時。

作者結論

針對系統性回顧更新的時機和方法進行的研究不多,研究方式可行性及效率都不確定。未來應針對缺失進行研究。

翻譯人

本摘要由慈濟醫院葉日弌翻譯。

此翻譯計畫由臺灣國家衛生研究院(National Health Research Institutes, Taiwan)統籌。

總結

能及時更新資料的系統性回顧最有用。目前仍不清楚如何選擇更新時機與策略最合乎成本效益。本回顧要找出系統性回顧更新的策略和方法。共有15篇文章包含4種更新的策略以及兩種統計方法。這些研究並未這些研究將這4種策略彼此比較以此並不清楚何者較好。針對系統性回顧更新的時機和方法進行的研究不多,研究方式可行性及效率都不確定。未來應針對缺失進行研究。

Plain language summary

When and how to update systematic reviews

Systematic reviews are most useful when they are regularly updated. It is not clear, however, when updating should be done and which strategies and methods are most cost-effectiveThis review identified strategies and methods used to update systematic reviews. Fifteen articles that documented 4 strategies and 2 statistical methods for updating systematic reviews were found. The 4 strategies have not been compared to one another so their practical performances are unclear.

Little research has been conducted on when and how to update systematic reviews and the feasibility and efficiency of the identified approaches is uncertain. These shortcomings should be addressed in future research.

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