pubmed: medline with a future
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PubMed: Medline with a Future. Laura Larsson Research Librarian Health Services revised September 11, 2014 [email protected]. Objectives. learn how to use this new Web-based software to perform online database searches learn basic and advanced searching - PowerPoint PPT PresentationTRANSCRIPT
PubMed: Medline with a Future
Laura LarssonResearch Librarian
Health Services
revised April 21, 2023
Objectives
learn how to use this new Web-based software to perform online database searches
learn basic and advanced searching specialized tips for finding citations
PubMed
New development in the area of online database searching
MEDLINE
bibliographic citations and author abstractsAll fields of medicine3,900 current biomedical journals published
in the United States and 70 foreign countries>9 million records dating from 1966+Medline is updated weekly and the records
incorporated into PubMed
PREMEDLINE
Basic citation information and abstracts done first, then MeSH added and record checked later on
New records added to PREMEDLINE daily
PubMed's Homepage
http://www.ncbi.nlm.nih.gov/pubmed The sidebar provides help, an overview,
gives you NLM news and announcements, and gives you clinical queries with built in search "filters”
Graphic of Search Modes
Marvellous Features Include:
The Journal BrowserThe Citation Matcher programRelated articles, or, “More Like This!!!!”
The Journal Browser
The Journal Browser enables the viewer to look up journal titles by the title, keyword, title abbreviation or ISSN number.
The Citation Matcher
if you only have the author’s family name and the date,
you can locate the citation the author’s family name and the pages,
you can locate the citation the date and pages other variations on this theme
Related Articles
once you’ve found one article, you can click on Related Articles and find ones which have similar indexing and content
very, very usefulmore on this feature, below
Four different modes of searching
Basic SearchAdvanced SearchBoolean SearchClinical Queries
Basic Search Mode
Enter the terms in the query boxTerms are automatically ANDed
together so that all terms or concepts appear in the records displayed
Click on Search after all terms are added to enable the search
Author Searches
enter author as: surname iiif you enter larsson l, you will get back
larsson la, larsson lb, and so onuse quotes to prevent truncation from
occurring: “larsson l”
Author + Subject
health care administration “ross a”
Author + Article title
“ross a” moving into the twentieth
Journal Title Searches
enter the journal’s full name, e.g., journal of nutrition
enter the journal’s abbreviated name, e.g., j nutr
enter the ISSN, e.g., 0022-3166retrieval will be limited to the specified journallinks to full text if articles are available on the
Web
Journal Title + Subject
j nutr obesity therapy
Subject 1 and Check Tag
Advanced Search Options
Click on Advanced Search from the Homepage sidebar
Field specific searches (use Search Field pull-down menu)
continue to Add Terms to Query boxterms are ANDed together search statement is displayed at the top of the
screen with the number of citations (if any)
Lists of MeSH Terms
select Mode | List Terms select the term/s you want by
highlighting and clicking on Selectscroll up and down the alphabetic
displaymodify the query as desired
Subheadings
are used with MeSH to arrive at a more specific aspect of a subject
examples include: /epidemiology, /trends, /complications, /diagnosis (and so on
look at the handout for subheadingsenter the term/subheading; e.g.,
asthma/drug therapy
Boolean Searches
construct your search using the Boolean operators: AND, OR, NOT
AND - (reduces the number of hits) includes only those citations which contain ALL the specified terms
OR - (expands the number of hits) citations which contain the terms
Boolean Searches, continued...
NOT - (limits) excludes those citationsRANGE - (limits) ranges the specified term
(e.g., publication date)
Boolean operators must be entered in UPPERCASE
Truncating Terms
Called wild card searching
use an asterisk *
use when you want to use singular or plural, or when you have a word which might have several endings
Other Boolean Information
Boolean search statements are processed left to right
sample search:
((neoplasms/etiology [majr] AND sexually transmitted diseases {majr]) NOT hiv infections [mh]) AND english [la] AND 1994:1993 [dp]
Graphic of Clinical Searches Screen
Clinical Searches
for clinicianshas built-in search “filters”four study categories - therapy, diagnosis,
etiology, prognosis are providedincrease sensitivity (most relevant articles
with some less relevant ones) or specificity (includes most relevant articles but does omit a few)
Clinical Searches, continued…
select Clinical Queries from the PubMed Homepage sidebar
type in your subject and select the study Category and Emphasis | Search
do not use this search method if you wish to retrieve everything
this filter is designed to report research conducted with specific methodologies
retrieval is limited!!!!
Citation Matchermatch a list of citations to PubMed entries
using journal, volume, issue, page number, and year
select Journal Browser from the PubMed Homepage sidebar
then select Citation Matcher on the Journal Browser sidebar
use to locate a single article by selecting Citation Matcher for Single Articles
Retrieving Citations
if you click or Search (or Enter) in Basic Mode, or if you select: Retrieve # of Documents (Advanced Mode) the search will be run
citations are displayed in batches of 20 citations appear on a document
summary page
Retrieving Citations
to print or save a larger number of citations, click on the Docs Per Page pull-down menu and select a number larger than your total retrieval
then select Searchthis redoes the search and re-displays
all the citations
To Display and Print or Save Citations
to view citations, or to print or save them, you must first display the citations
click on the Display buttonclick on the check box to the left of each
item to select themno selectons = display all citations
Display Formats
Abstract report is the default: Journal Citation, Title, Authors, Address or Affiliation, and Abstract
MEDLINE report: two-character tagged field use for importing into bibliographic
management software!!!!!
Formats, continued...
Citation report: Journal Citation, Title, Authors, Address or Affiliation, Abstract, MeSH terms, chemical substances, MEDLINE and PubMed unique identifiers
ASN.1 report: A structured format for the full records, in which each data element is explicitly represented
Printing
File | Print or Print iconto save the items to a file, you must first
go to the bottom of the page and select your computer (e.g. UNIX, Mac, PC, select the desired file format (text or HTML), then Save
use text for saving to citation managers such as ProCite or EndNote
Print Warning
the number of citations per page is set at 20 (the default)
if you want to print more than 20 citations at a time, click on the Docs Per Page pull-down menu and select some number greater than the number of citations you found and click Search.
you wil then be able to rerun your search and Save or Print from your browser
Saving
scroll to bottom and specify the kind of computer you are using: Mac, PC, UNIX
select format (text or HTML) from the pull-down menus
click on Save, select the subdirectory and give the file a name: filename.txt
save as Text if you want to save to citation management software
Printing into a Citation Manager
to change the display format, select the Display pull-down menu at the top of the document summary page
to import records into a citation manager, select Medline Report
Printing or Saving Citations
display all the items, click on the check boxes to the left of the citations and then click on the Display button
Specialized Tips for Finding Citations
verifying a citation when all you have is the volume and pages
use the Citation Matcher type in what you have
MeSH Browser
displays MeSH terms in a hierarchical structure
lets users select terms for searchingsearcher can attach subheadings
directly and limit terms to a Main Concept
Stop Words
these words do not get processed when you search
so don’t bother to type them inexamples: a, about, many, meanwhile,
myself, sufficiently, where, yet, you
Other Points of Interest
some shortcomings with the Related Articles algorithm
those articles "related" to an article without an abstract seem to generally also not have abstracts
updates and changes to the PubMed program are noted at:
http://www.ncbi.nlm.nih.gov/PubMed/news.html
Where to Get Help
The NLM PubMed Project. PubMed Overview http://www.ncbi.nlm.nih.gov/PubMed/overvi
ew.html
PubMed Help http://www.ncbi.nlm.nih.gov/PubMed/pubm
edhelp.html
Interesting Search
Rural AND obstetrics AND access AND outcomes
what do you get when you type this search in?
what does clicking on Related Articles get you?