Module 1 - Day 3 - 3 - How to do a literature search using PUBMED – an overview

Module 1 – Day 3 – 3 – How to do a literature search using PUBMED – an overview

you you I'm conducting a research and as part of the research process you'll always have to perform what is called a literature search the true church search can be defined as a well-thought-out an organized search for all other literature published on a topic and because the process of a litigious sesh can be a time-consuming job I will structure editor search the most effective and efficient way to locate sound evidence on the subject you are searching such evidence can be found in books journals government documents and in the internet there are several reasons why you need to perform a litigious eshe first to ensure that you have a thorough understanding of the topic yard session second to identify similar work done within the area of your SCH third to compare with previous finding forth to critic existing finding and suggest further investigation and finally to identify knowledge gaps and proposed five further studies so the objective of this presentation is to give an overview on how to perform a basic initial search and medline using up meds for what is medline medline is the US national library of medicine and it is the largest medical database in the world covers medicine the industry within Eric science health care system preclinical science nursing and other biological sense medline contains citations for 4800 journals and over 14 million records are indexed in MEDLINE most of the records are from english language sources or have english abstracts in order to search MEDLINE database we use pubmed in other words pubmed is engine for medline pubmed produced by the National Center for Biotechnology information and CBI and the national library of medicine nlm it's accessible worldwide at no charge and all you need is a web browser to access PubMed pubmed contains medline from 1966 to present it contains articles from some non midline Germans issues of journals published before their selection for medline indexing it also contains old medline from 1950s to 1965 we can see that pubmed is more comprehensive than medline this is how the PubMed homepage look like and as we can see there is a database selection menu where you can choose between pubmed and other NCBI databases there is a search box where you can enter your search terms there is also a link to PubMed help and a link to advanced search where you can construct a tale of search and also links to a specific section of health pubmed frequently asked questions and an into more resources but before we start searching for information you have to develop a search strategy a search strategy is a plan help that help you to find the information you are looking for here are some tips on how to develop your strategy first identify the key concepts or key search terms second determine alternative terms for these concepts if needed and finally do you find your search to Dad's study groups etc as appropriate so let's propose that we have the research question what role does pain have a sleep disorders our key concepts here will be then and it sleep disorders and to search in PubMed you simply enter the search terms into the search box and you can see why you are entering your search terms automatic suggestions will displace as you type your search tips you can click them off to temporarily disabled auto-suggest feature pubmed we can see that pubmed automatically adds words and phrases together using the search team penance living disorders our search retrieved 5495 records that contain both been and it's leaving disorders and this is a large number of records in order to limit our search we use the filter which exists on the left side of the screen and we can limit our search according to article type text availability species languages and age group as men as well as many other options we can also use boolean operators such as and or and not to combine or execute he waits in the sesh and plea and operators must be entered in uppercase the boolean operator or used to retrieve a set of citations in which each citations contains at least one of the search terms example football or hockey or soccer the receivin is all citation that include any one of these tapes not relieves a set from which citations to articles containing specific search terms following the not operator are eliminated example our flight is not letter the retrieval is a portion of a third even for arthritis and used to native asset in which each article contains all search tips for example Simon in an America the retriever is only the overlap of the result for each term those records in which both terms appear and is a default operator used in PubMed nesting concepts when using multiple boolean operators they are processed left right for example Salmonella and hamburger or eggs this will retrieve articles that include postern Salmonella and hamburger as well as records with a term X whether or not they contain the other two tips to change the order in which terms are processed in close the terms in parentheses the term inside the set of parentheses will be processed as a unit and then incorporated into the overall strategy example Salmonella and hamburger or eggs and this will retrieve records that contain the term sanguillen as well as one or both for the terms a burger or eggs there are also other number is there is also a number of additional tools that help you build in your search involvement such as the mesh database enables you to find and search with mish vocabulary Terry's the NLM catalog journals enables you to find information about journals and search these journals in PubMed clinical queries are prefabricated searches that can help you narrow your search to clinically relevant the feature you can also search permit by authoring it you simply enter the author's last name plus initials without punctuation in the search box and then click the search button for example that is ad or the career up we can also searching named by entering the journal name or abbreviation in the search box

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