PubMed An introduction
Purpose of Class • Understand what PubMed is • Know when to use it • Know how to conduct a basic search • Understand how to use MeSH terms • Know how to find full text of an article
PubMed Is……. • A freely available database • Created by the National Library of Medicine • Citations to scholarly literature • Covers fields of biomedicine and health • Big! Contains over 21 million citations, many with abstracts
PubMed Is…. • Includes all of the content from MEDLINE • Also includes citations to articles not yet in MEDLINE (very old, or very new articles not yet indexed) • Includes selected articles in fields not covered by MEDLINE such as astrophysics • Coverage from 1946-Present
Why Should I Use PubMed??? • High quality information; much of content peer-reviewed • Up-to-date; content added almost daily • Hot-off-the-press citations to articles not yet published or indexed in MEDLINE • Learn how to use now--most nurses in clinical settings do not have access to subscription databases like CINAHL (Dee & Stanley, 2005)
Accessing PubMed….. • Always(!) access through Carroll College library webpage • Access through Carroll College provides customized version • Customized version contains links to additional full-text access for Carroll College users • On campus or off campus access
Basic Search Rheumatoid Arthritis Sinus Infections Rheumatoid Arthritis Sinus Infection
Basic Search How do I know what terms to use?????
MeSH • Medical Subject Headings • Subject terms assigned to articles by PubMed indexers, specialists who read article • Highly specific—over 26,000 terms • Excellent way to search PubMed • But…MeSH only works for citations that have been indexed, so you will miss some citations searching with MeSH
Beyond Basic Search What if I get 114,629 results?
Boolean Searching • Based on mathematical logic • Uses the words AND, OR, and NOT to connect search terms • These words (Boolean operators) can either limit or expand your search
Truncation • Shortcut for finding all forms of a word • PubMed uses the asterisk character (*) for truncation • Nurs* would find nurse, nurses, nursing….. • Expands search • Be careful! Truncation turns off automatic term mapping in simple search—check search details!
Proximity Searching • Searches for words adjacent to each other • PubMed only allows for exact phrase searching—words next to each other in exact order • Use quotation marks to enclose search phrase—”Endonasal activity in WG is associated with”
Managing Results I did a great search—now what???
InterLibrary Loan • If we don’t have full text, we can get it from another library • InterLibrary Loan (ILL) form is available on library homepage • Fill in information using PubMed record • Delivery time for articles is often less than a week (but not always—plan wisely!)
Managing Citations • Clipboard holds information for 8 hours • Clipboard best for short sessions • My NCBI provides permanent storage of citations • My NCBI has many other helpful personalization features • My NCBI very useful if use PubMed regularly or for big projects