Meva Consultation

The following consultation form lets you analyze your downloaded PubMed file. The comments below will guide you through the steps of a Meva consultation.

Parameter		Field 1	Field 2
I n p u t	Bibliogr. Field*	Affiliation Article Identifier Author Comment In Comment On Copyright Information Corporate Author Corrected and republished in Corrected and republished from Date Completed Date Created Date of Electronic Publication EC/RN Number Entrez Date Erratum For Erratum In Full Author Name Full Investigator Full Personal Name as Subject Gene Symbol General Note Grant Number Investigator Investigator Affiliation ISSN Issue Journal Subset Journal Title Abbreviation Language Last Revision Date MeSH Date MeSH Term NLM Unique ID Number of References Original Report In Other Abstract Other Copyright Information Other ID Other Term Other Term Owner Owner Pagination Partial retraction in Partial retraction of Personal Name as Subject Place of Publication Publication History Status Date Publication Date Publication Status Publication Type Republished From Republished In Retraction In Retraction Of Secondary Source Identifier Source Space Flight Mission Summary For Patients In Status Tag Title Transliterated/Vernacular Title Update In Update Of Volume	Affiliation Article Identifier Author Comment In Comment On Copyright Information Corporate Author Corrected and republished in Corrected and republished from Date Completed Date Created Date of Electronic Publication EC/RN Number Entrez Date Erratum For Erratum In Full Author Name Full Investigator Full Personal Name as Subject Gene Symbol General Note Grant Number Investigator Investigator Affiliation ISSN Issue Journal Subset Journal Title Abbreviation Language Last Revision Date MeSH Date MeSH Term NLM Unique ID Number of References Original Report In Other Abstract Other Copyright Information Other ID Other Term Other Term Owner Owner Pagination Partial retraction in Partial retraction of Personal Name as Subject Place of Publication Publication History Status Date Publication Date Publication Status Publication Type Republished From Republished In Retraction In Retraction Of Secondary Source Identifier Source Space Flight Mission Summary For Patients In Status Tag Title Transliterated/Vernacular Title Update In Update Of Volume
	Search Filter	Ignore case Whole words only	Ignore case Whole words only
		If Author: First only All Last only
	Min. Frequency
O u t p u t	Diagrams	Top  scaled with auto 0,01 0,1 1 10 100
	Details	alphabetical Frequency ascending descending	Always show PMID
	MeSH Codes
	MeSH Tree	Print depth Branch A: Anatomy B: Organisms C: Diseases D: Chemicals and Drugs E: Analytical, Diagn. & Therap. Techniques & Equipment F: Psychiatry and Psychology G: Phenomena and Processes H: Disciplines and Occupations I: Anthropol., Education, Sociology & Social Phenomena J: Technology, Industry, Agriculture K: Humanities L: Information Science M: Named Groups N: Health Care V: Publication Characteristics Z: Geographic Locations will be... charged with frequencies and displayed preferably charged, but all branches will be displayed
	Link Restrictor
	Result Format	HTML Text (Details) Text (MeSH incl. interpolated terms) Text (MeSH excl. interpolated terms)
	Comment
	File Name*

     ^* Required Parameters

Consultational Steps

1. Search in PubMed^® for the topic you are interested in. Avoid to receive more than 10 MB (about 3,000 articles) from PubMed, otherwise use MePrep. Adhere to PubMed's restrictions for large downloads.
   Example: You want to explore vitamin c deficiency caused by chronic alcohol abuse. To catch most of the relevant articles in your retrieval (high recall) and to exclude junk (high precision), you can search for medical subject headings provided by PubMed's MeSH. Thus, instead of a simple full-text search for say vitamin c alcohol you can do a qualified search for ascorbic acid[mh] AND alcoholism[mh]. After pressing ENTER or Search, you will receive a listing of articles.
2. Save your listing as MedLine file onto your computer.
   Example: In the PubMed form, press the Send to button, Choose File and Format: MEDLINE, then press the Create File button. Choose a name for the file to save, say vitc-alc.txt.
3. Consult: Select the bibliographic fields¹ you wish to analyze as well as the name of your saved file in the form above. Restrict your analysis with minimal frequencies oder filter expressions. If you'd like to have links inside Mevas result pointing into PubMed, you should enter your PubMed search expression in the link restrictor field. Adjust further parameters as needed. Move the mouse over a parameter or click on it to get some short help or look into the form help to get extended help. Submit the form to Meva.
   Example: You want to learn more about who wrote on what. Choose Author as field 1 and MeSH Terms² as field 2 (or vice versa, if you are more interested in MeSH terms). Provide an asterisk (*) as search filter for MeSH terms to retrieve only major topics³. Select your saved PubMed file vitc-alc.txt in the file name field. Enter your PubMed search string ascorbic acid[mh] AND alcoholism[mh] into the link restrictor field. Finally, press the consultation button. Illustration.
4. Analyze: Meva analyzes your PubMed file and returns its result as an HTML page to you. If PubMed allows a field-specific search for a bibliographic value found by Meva, you can trigger a new PubMed search for it by clicking onto this value in the result page. You can read abstracts or the full text in PubMed then or refine your search proceeding with step 2...

1. A bibliographic field of a MedLine file contains information about an article (e.g. author, title, subject headings etc.).
2. MeSH Terms are medical subject headings used to describe the topics discussed in an article.
3. MeSH Major Topics are MeSH terms that are one of the main topics discussed in the article denoted by an asterisk on the MeSH term or MeSH/Subheading combination in the MedLine file, e.g. Sarin/*toxicity. An asterisk as a MeSH term filter causes Meva to process only major topics.

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