Fast

1. Which One？ Fast Economic Convenience Efficient

2. 如何查阅、筛选和获取高质量文献 Library of CAMS/PUMC 李 越 Apr. 18, 2012

3. What is the Literature? How to find ? How to evaluate ? How to read ? How to analysis ? How to manage ?

4. About the Literature

5. Come fromStudy(evidence) • Original • Randomized Controlled Trials(RCT) • Cohort Study • Retrospective Study(case control) • ……

6. Come fromStudy(evidence) • 2nd • Systematic Reviews • Meta Analysis • Clinical Practice Guideline（ CPG） • ……

7. Come fromStudy(evidence) • 3rd • News • Meeting • Bibliography • Database • ……

8. Level of Study(evidence)

9. About the Literature √

10. About Search -PubMed

11. NCBI（National Center for Biotechnology Information） • General Introduction • Established on 1988, as a division of the National Library of Medicine (NLM) at the National Institutes of Health (NIH). • Http://www.ncbi.nlm.nih.gov

12. NCBI（National Center for Biotechnology Information） General Introduction Conducts research on fundamental biomedical problems at the molecular level using mathematical and computational methods Maintains collaborations with several NIH institutes, academia, industry, and other governmental agencies Fosters scientific communication by sponsoring meetings, workshops, and lecture series Supports training on basic and applied research in computational biology for postdoctoral fellows through the NIH Intramural Research Program

13. NCBI（National Center for Biotechnology Information） General Introduction Engages members of the international scientific community in informatics research and training through the Scientific Visitors Program Develops, distributes, supports, and coordinates access to a variety of databases and software for the scientific and medical communities Develops and promotes standards for databases, data deposition and exchange, and biological nomenclature

14. NCBI（National Center for Biotechnology Information） Entrez(Cross-Database Search System ) It is a powerful federated search engine, or web portal that allows users to search many discrete health sciences databases at NCBIwebsite.

16. NCBI（National Center for Biotechnology Information）

17. General Introduction • Over 20 million citations from MEDLINE(1966-) and additional life sciences journals(1865-) • MEDLINE + PreMEDLINE + HyperLink

18. General Introduction • More than 80 countries,50 languages, 23.7 thousand journals • It`sFREE!! HOW to USE

20. Search Fields

21. Boolean Search • AND • OR • NOT

22. How do I search PubMed? • Identify the key concepts for your search. • Enter the terms (or key concepts) in the search box. • Click “Search” to run this search in PubMed.

23. Sample • 胃癌 • Stomach Cancer • Stomach Tumor • Stomach Tumour • Stomach Neoplasm(s) ………… …………

24. Stomach Cancer OR Stomach Tumor OR Stomach Tumour OR Stomach Neoplasm?

26. Journal Title、Publication Date Authors Title Words Affilication Search the same topic articles from Title\Abstract\MeSH Unique Identifiers Abstract

27. FullText HyperLink LinkOut

31. WHY there are so many articles not I want? The garbage articles make me boring!!

32. More Exactly? • Stomach Cancer • Stomach Cancer • Stomach Tumor • Stomach Tumour • Stomach Neoplasm(s) ………… ………… MeSH Stomach Neoplasms

33. MeSH(Medical Subject Headings) • Controlled vocabulary of biomedical terms that is used to describe the subject of each journal article in MEDLINE • There are 26,142 descriptors in 2011 MeSH

35. 标 签

36. Controlled Standardized

38. Stomach Cancer

41. Subheadings • Narrow the specific focus of a main topical heading to a particular aspect of the subject. • There are 83 topical qualifiers • http://www.nlm.nih.gov/mesh/topsubscope.html

43. Tips • Operation—Surgery(Subheadings) • Drug/adverse effects • Therapy Method/adverse effects • Disease/complication

44. Sample Therapy or Nursing on Stomach Cancer

47. 主要主题词

49. 不扩展下位词

50. How tofocus on my search? Limits