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Searching for EvidenceTo answer key questions and guide evidence-based practice, it is optimal to identify all available relevant better quality studies or valid and up-to-date syntheses of such studies. In recent years, much work has been devoted to developing effective search strategies to reach these ends. A good search strategy will identify a high proportion of available relevant studies without requiring us to sift through much irrelevant material. Below you will find selected key resources on this topic. "Online source" indicates that the resource is available online without charge. Cost-free registration may be required for access to some items with this designation. In addition to more effective searching of the general databases, searchers can consult The Cochrane Database of Systematic Reviews and other specialized databases of syntheses of better evidence. Identifying better studies: general guides Identifying better primary studies: Cochrane CENTRAL Register Identifying systematic reviews and meta-analyses Identifying better studies: general guidesFinding studies for systematic reviews: a resource list for researchers, Centre for Reviews and Dissemination.Finding the evidence, Centre for Evidence Based Medicine. Golder S. Search strategies to identify information on adverse effects: a systematic review. J Med Lib Assoc. 2009;97(2):84-92. (Online Source, PDF) Haynes RB, McKibbon KA, Wilczynski NL, Walter SD, Were SR, for the Hedges Team. Optimal search strategies for retrieving scientifically strong studies of treatment from Medline: analytical survey. BMJ. 2005;330(7501):1179. (Online Source) InterTASC information specialists’ sub-group search filter resource, Centre for Reviews and Dissemination. Lefebvre C, Manheimer E, Glanville J, on behalf of Cochrane Information Retrieval Methods Group. Chapter 6: Searching for Studies. In: Higgins JTP, Green S, eds. Cochrane Handbook for Systematic Reviews of Interventions, Version 5.0.2, updated September 2009. (Online Source) PubMed clinical queries, National Library of Medicine.
Identifying better primary studies: Cochrane CENTRAL Register
The Cochrane Central Register of Controlled Trials (CENTRAL), Cochrane Collaboration. (Online source for initial search results to about 500,000 records, primarily of controlled trials) (Online source for Ovid search guide) Dickersin K, Manheimer E, Wieland S, Robinson KA Lefebvre C, McDonald S. Development of the Cochrane Collaboration's CENTRAL Register of Controlled Clinical Trials. Eval Health Prof. 2002;25(1):38-64. Identifying systematic reviews and meta-analysesPubMed clinical queries: find systematic reviews, National Library of Medicine.Systematic reviews, Information Sources, Centre for Reviews and Dissemination Most recent page update: 1/31/2011
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Childbirth Connection is a national not-for-profit organization founded in 1918 as Maternity Center Association. Our mission is to improve the quality and value of maternity care through consumer engagement and health system transformation. Childbirth Connection promotes safe, effective and satisfying evidence-based maternity care and is a voice for the needs and interests of childbearing families. |
News and Features
Listening to MothersSM III: New Mothers Speak Out (June 2013) reports on new national surveys about issues women face in the postpartum period and their views about maternity care.
Access the full report and supplementary materials ![]() Listening to MothersSM III (May 2013) is the third national survey exploring women's experiences in pregnancy and childbirth. Commissioned by Childbirth Connection, conducted by Harris Interactive, and funded by the W.K. Kellogg Foundation, the survey polled 2,400 women who gave birth in U.S. hospitals from 2011 to 2012. Results show that medically intensive experiences are typical, and evidence-based practices are underutilized. Childbearing women need better support and knowledge to navigate their maternity care. Access the full report and supplementary materials ![]() New Report: Maternity Care and Liability Go to report and supporting materials ![]() New Report: The Cost of Having a Baby in the United States Go to report and supporting materials ![]() New Cesarean Resources: Go to Best Evidence Report ![]() Go to web pages and booklet for women ![]()
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