Search Engines
NLM Mobile
Includes several programs for Palm devices and Pockets PCs some of which can be used from the desktop. These programs include AIDSinto PDA Tools, WISER Wireless system for First Responders, PubMed for Handhelds and the NCBI bookshelf.
Third parties PubMed Tools
Data is available through an API Application Programing Interface that allows interested users to write programs that mine the MEDLINE database in new ways. Examples of third parties: -PubMed PubReMiner -PubMed EX -Gopubmed -Quertle -NLM Mobile
Display options
Search results display automatically defats to summary view, but you can also select abstract, Medline, LML and others
Options for saving your results
-Clipboard (store up to 200 citation for 8 h) -Email (to a colleague or yourself) -Text lets (save results in text files) -File lets (into a format suitable for bibliography) -Orders (send citation to an affiliated library under Loansome Doc programs) -My NCBI (U Rignt hand corner) valuable storage area for searches and collection of articles you have retrieved allowing you to: *Save searches *Set up emails alerts *Display links to online full-text of articles *Choose filters that group search results *Registration is required for this free service
Gopubmed
-Is a semantic search engine for searching PubMed enabling searchers to find articles easier and faster. -Simply enter keywords or MeSH into the search box and the search engine will display the frequency of relevant term with which to formulate your search.
Quertle
-Is a semantic search engine that helps user: *Find true relationships between terms, rather than simple co-occurences. *Use easily employed filters to limit a search by year or publication type *use power terms to find appropriate categories of terms
PubMed EX
-Is an extension of Firefox and Internet Explores that marks up PubMed search results with additional information derived from data mining. -Provides background information that allows searchers to focus on key concepts in the retrieved abstracts.
-Is by far the most widely used search engine in the world, the largest and fastest. -Is derived from the work googol which means 1 followed by 100 zeros -the success is based largely on its intuitiveness , retrieval speech a and productive results. -Is listed as one of the 10 forces to flatten the world in Thomas Friedman's book "The world is flat".
Google search options: By settings preferences-
-Languages your prefer -N of search results per page 10 or 20 -Whether you want to search to launch in the new window(recommend because when you exit the current pg, you lose your search)
PubReMiner
-Medical subject heading searching gives power to a PubMed searching. -Allows the searchers to enter keywords or PMIDs related to a query and then analyses the relevant citations and their indexing to develop a list of terms with which expand the search. -available directly from the website or through a web browser plug-in for Explores or Firefox
Use advance search tips at the top right of the advance search pg to find operators to refine the search
-Type define: before a word or phrase to have gloogle serve as a dictionary. -Enter an arithmetic string and Google will function as a calculator.
Select the Advance Search option on the main pg (located at the very bottom of the pg)
-Under find web pages that have....you can search of a term or terms in the title only or in the body or both. -Search fro synonyms using "or" as the operator -Select search by File type:Work, excel, PDF, Power Point, etc -Put quotation make around the words to search for an EXAT phrase.
PubMed limits options: allows a search to be narrowed by date, age of subject, gender, humans or animals, language, publication types, topics and field tags
-also search for full text and free full text articles and abstracts. -u can search by author or journal name -Searchable publication type:Clinical trial, editorial, letter, meta-analyses, practice guideline, randomized controlled trial, and review. -Field tags. you can stipulate whether you want the search term in the title of body of the article. Multiple other choices are listed as well.
Medline is the primary entrez database
-containing 19 million citations from the worlds' medical literature from 1940s to present. -covering the fields of medicine, nursing, dentistry, veterinary medicine, health care administration, the pre-clinical sciences, and some other areas of life sciences. -The only available directly from the NLM National Library of Medicine.
Medical Subject Heading
-journal articles categorized by NLM indexes -articles are saved under 2 or + subjects -easier search with "preferred term" -Is valuable in broadening or narrowing a search query. -at the bottom of each Mesh entry is the categorical display or mesh tree. -Searching the term includes all the specify types listed under it.
Basic search help provides helpful tips to improve the search process
-searches are not case sensitive -the word "and" is not necessary, because unlike PubMed, "and" implied in Google (use "or") -The top of the 3 paid advertisements pertaining to your search will appear at the top of the pg, followed by the most popular website.
PubMed citation include
-the author -title -journal -publication date and -PubMed identification number 65% of Medline citation include author abstract.
Google Scholar
Is an offspring of Google that searches the full text of peer-reviewes scholarly journal articles. at publishers websites and the citations and abstracts provided online by the National Library of Medicine through PubMed. -searches the quantity, but not the quality -Unlike PubMed, Google Scholar searches the full text of articles. -Makes search easier, but should be used in conjunction with PubMed, not as a replacement for it. -Offers "cited by referencing" which is not available elsewhere for free.
Google was developed by
Larry Page and Sergey Brin in 1996. They created the "back rub" strategy which meant that a search would prioritize the results by ranking the page that is linked the most first (page ranking). -Performs 1 billion searches daily by utilizing thousands of servers running the Linux operating system.
Clinical Queries
Provides another way to search for articles reporting the result of randomized controlled trials with the use of built-in-filters. The filters are built into clinical queries interface, so you can search for randomized controlled trials by ETILOGY (cause) DIAGNOSIS, THERAPY, PROGNOSIS OR SEARCH FOR CLINICAL PREDICTION GUIDES. -searches can be modified by either broad/sensitive or narrow/specific
Using the Advance Search screen
Since PubMed records your search statements, go to advanced search and click combined statement by clicking searches statement numbers and choosing the appropriated Boolean operator from the menu.
Related articles and links
To the R of each article you will see a hyperlink to similar or related articles. Select links and it can link you to: -PubMed books -PubMed central journal articles links in free and full text -Link out (external resources OVID or MDConsult -Pt information from Medline Plus -PubMed for handhelds website for MEDLINE web and mobile -PubMed PICO search (Patient problem, intervention, comparison, outcome)
Single citation Matcher
Type the information you know into the form to find the article of interest. Can search by author, journal, date, volume, issue, pg or title words.
Selecting multiple search limits
You can enter the limit you want to access, for example: only items with links to free full text, English, Core clinical journals, Adult 10-44 years.
Google can be criticized for being a shotgun
and not a rifle in terms of returning too many results but this has not diminished its popularity.
PubMed does not search the
full text of cited articles.
Pub Med is the search engine of choice for
informal searches of the medical literature, most inquiries are informal so searches need to yield primarily rapid and relevant results.
PubMed is the primary search engine for physicians seeking
information on unusual cases and research topics. All healthcare worker who seek evidence based medical answers should learn to use PubMed.
PubMed search engine
is web-based retrieval system developed by the National Center for Biotechnology Information NCBI at the NLM National Library of Medicine. -Known as "Entrez" that index information in: Toxicology, bioinformatics and genomics, and include textbooks.
The query box in PubMed allows
keywords, Medical Subject Heading MESH and natural language entries. Alone or connected by boolean such as "and" or "or'. -the goal of this search is to find specific citation on the topic described by the search terms.
Search Limits
once the concept search has been entered, you may limit the search with the search parameters (filters). -major topic -age -core clinical journals -links to free full text -clinical trial -random controlled trial or review -checked tie box for all four.
Changing Free Full text to Any Abstract
reduce the search considerably. -The most current articles are listed first -many articles are associated with an abstract the sums the article -you must go to the full text article for more detail
PubMed uses indexes and Boolean logic to retrieve information
search questions should be analyzed and broken down into concepts that are described using MESH headings or text words. This terms are joined by AND to retrieve articles that contain BOTH concepts. Ex; bacterial infection AND sinusitis.
The PubMed search looks like Google, but....
the words entered in the search box are processed based on concepts searching rather than natural language searching.
Google provides a very global review returning articles from the lay press, medical journals magazined, etc.. 56% compared
to Pub Med 8.7%
The internet is the new global library
with more than 3 billion web sites