The Author's Conclusions (AC) field summarizes the author's conclusions about the study and its results.

All Fields (AF) is an alias for all of the fields which occur in the source documents, including value-added fields such as Subject Heading (SH).

The Accession Number (AN) field contains a unique number which identifies a record in the NHS-EED database.  All accession numbers are preceded by the letters "NHSEED".

Additionally, if the record has been added since the last database update, the update flag "New" will display after the accession number. Search the Update Flag (UF) field to retrieve all of the most recently added citations: new.uf.

The Author (AU) field includes the name of the group or individuals who authored the NHS-EED document.

The Reviewed Article Author (AY) field contains the names of all the authors of the article or study being reviewed. 

Type the desired author's last name, followed by a space and the initial, if known. If you are unsure of the spelling of the last name, enter one version and you will be able to find the others.

The Reviewed Article Book Chapter Title (CH) field includes, if applicable, the chapter title of the book in which the reviewed article was published.  This field displays as part of the Reviewed Source (SR) field.

The Copyright (CO) field contains the copyright information associated with an article.

The CRD Commentary (CR) field contains comments on the quality of the study under review under the following headings: Choice of comparator(s), validity of estimate of benefit, validity of estimate of costs, and other issues.

Among the issues addressed by the CRD are whether the rationale for the choice of comparator(s) was justifiable, the design of the study/review estimating clinical effectiveness, factors to consider in the economic analysis, and factors to consider in the synthesis of the study.

This field can also be searched as part of the Text (TX) field.

The Database Entry Date (CY) field contains the year in which the article was added to the database.

The Reviewed Article Year of Publication (DI) field includes the year of publication of the reviewed article. 

This field displays as part of the Reviewed Source (SR) field.

The DOI (DO) field contains the Digital Object Identifier - a unique and persistent digital identification code for any object of intellectual property.

The DOI itself consists of two parts: a prefix which is assigned to each publisher by the administrative DOI agency, for example "10.1002", and a suffix which is assigned by the publisher and can be any code that the publisher chooses, such as "14651858". The full DOI appears as such: "10.1002/14651858".

The Reviewed Article Volume (DV) field includes the volume of the reviewed article. This field displays as part of the Reviewed Source (SR) field.

The Editor (ED) field contains the editor(s) associated with the article.

The Reviewed Article Editors (ER) field includes the editors of the reviewed article. This field displays as part of the Reviewed Source (SR) field.

Subheadings are qualifiers added to MeSH subject headings to refine their meaning.  Terms such as "etiology" or "therapy", when combined with a MeSH heading, give a precise idea of what an article covers.

The Floating Subheadings (FS) field contains both the 2-letter codes, such as "po" and the full headings, such as "poisoning". These are displayed following the corresponding MeSH Subject Headings.

The Subject Heading Word (HW) field allows you to search for and retrieve every MeSH Subject Heading (SH) and Publication Type (PT) that includes a particular word. 

The Hypothesis/Study Question (HY) field summarizes the general objective of the study in terms of the hypothesis or question(s) posed and the alternative health technology stated as a comparator. Justification of the choice of comparator is reported if available.

The Study Information (IF) field contains general study information such as effectiveness analyses, study population, and cost and funding information.

This field can also be searched as part of the Text (TX) field.

The Issue/Part (IP) field includes the issue associated with the current NHS-EED database.  Because the nature of the database is to be continually updated, the issue associated with each abstract will change with a new release of the database.

This field displays as part of the Source (SO).

The ISSN field (IS) contains the International Standard Serial Number for the journal in which the document was published.

The Journal Name (JN) field contains the full name of the journal in which the article was published.

This field displays as part of the Source (SO).

The Journal Word (JX) field contains individual words from every journal name. 

This field displays as part of the Source (SO).

The Local Holdings (LH) field indicates (with a "Y" or an "N") if a journal is available at your site.

The Local Messages (LM) field contains messages created by your Ovid System administrator to indicate holdings information about journals held in your library or institution.

The Product Online Date (OD) field contains the date of the initial release of NHS EED.

The Publisher (PB) field includes the publisher name for an article.

This field usually displays as part of the Source (SO).

The Publication Date (PD) field contains the publication date code for the current issue of NHS-EED.

The Reviewed Article Issue/Part (PO) field includes the issue and supplement number in which the reviewed article was published. 

This field displays as part of the Reviewed Source (SR) field.

The Reviewed Article Page (PR) field includes the page number of the reviewed article. 

This field displays as part of the Reviewed Source (SR) field.

The Publication Type (PT) field describes a document's overall form and substance in broad categories.

Enter the first few letters of the desired publication type or enter the letter "a" to view and select for the complete list of publication types.

The References (RF) field includes complete bibliographic citations for the publications cited by the authors in full text documents.

Enter the desired reference information, consisting of words typically found in a reference.  Consider searching on words in the document title, journal name or abbreviation, author name, page number, or year.

The Reviewed Article Publisher (RP) field includes the publisher of the reviewed article. 

This field displays as part of the Reviewed Source (SR) field.

The Reviewed Article Journal Words (RW) field contains individual words from every journal in which a reviewed article was published.

The Study Design (SD) field is defined (for example, randomised controlled trial or cohort study) and the number of centres is stated along with the duration of follow-up of the treatment cohort. If it is an experimental study,the participant allocation method is described, for example the block randomisation or stratified allocation.

The loss to follow up and reasons for withdrawals are stated along with any blinding method used for the assessment of outcomes, for example: Patient; Clinician; Assessor of patients' outcome.

The SD field can also be searched as part of the Text (TX) field.

The MeSH Subject Headings (SH) field contains the Medical Subject Headings used by indexers at the National Library of Medicine (NLM) to describe the content of an article. NLM's MeSH terms are organized in a hierarchy, or "tree" structure.

MeSH headings are entered into the index as phrases and should be searched as they appear in the NLM MeSH books or in our Tree display.

The Reviewed Article Journal Name (SJ) field contains the full name of the journal in which the Reviewed Article was published. 

The Summary Language (SL) field contains the language or languages in which the article is written.

The Source (SO) field contains the bibliographic information from the NHS-EED database, including issue number, journal name, product title, product subtitle, publisher and division.

The Reviewed Source (SR) field includes the complete bibliographic citation(s) for the publication(s) being reviewed.  These references can be viewed with the citation or with the full text.

The Reviewed Source field is word indexed.  To search, enter the desired reference information, consisting of words typically found in a reference.  Consider searching for words in the document title, journal name or abbreviation, author name, page number or year.

If you know the specific type of information you are seeking (such as a document title), you may also choose to search in one of the following fields: 

The Study Sample (SS) field contains details of the method of sample selection, sample or trial size, power calculation, and refusal to participate. The field is used to record any sample randomization methods, evidence that the initial study sample was appropriate for the clinical study question, and if power calculations determined the sample size.

In reporting the trial/study size, the abstract writer will distinguish between the number of subjects (such as patients, doctors, or health care provider units) overall, in the intervention group, and in the control group, and the percentage of subjects invited to participate who refused. The percentage of subjects excluded for any reasons from the initial sample is also recorded.

This field can also be searched as part of the Text (TX) field.

The Record Status (ST) field contains the status of the article as reported by the CRD.

The Subject Code (SU) field contains a subject code assigned by CRD. 

The Title (TI) field contains the title of the NHS-EED record, which generally corresponds to the title of the Reviewed Source as well.

Stopwords, which include commonly occurring words such as "of" and "the", will not be indexed. However, the word "a," which is a stopword in other fields, can be searched in the Title field.

The Reviewed Article Title (TO) field contains the title of article being reviewed. 

Stopwords such as "of" or "the" will display in documents but do not appear in the title index. However, the word "a," which is a stopword in other fields, can be searched in the Reviewed Article Title field.

The Full Text (TX) field contains the complete document text.  This field allows you to retrieve all documents with even the most passing mention of your search term.

Since this field contains such a large quantity of diverse information, most searches for a specific subject will result in retrieval of higher relevance if conducted in the Title (TI) or MeSH Subject Heading (SH) field.

Stopwords, which include commonly occurring words such as "of" and "the", will not be indexed.

The Update Flag (UF) field contains "New" if the review has been newly added since the last database update.  If the record has not changed since the last update, there will be nothing in this field.

Search new.uf. to see all of the reviews which have been added since the last update of the database.

The URL (UR) field contains the URL information for the original article.

The Catalog Holdings (XH) field indicates (with a "Y" or an "N") if a journal is held locally.

The Exploded MeSH Heading (XM) field contains pre-exploded MeSH Headings. MeSH Subject Headings are hierarchical, with up to twelve levels of narrower terms from the top of a hierarchy. In order to retrieve a term and all of its narrower terms, a subject heading must be "exploded", that is, the subject heading and all narrower terms are "OR'd" together. OVID pre-explodes highly-posted broader terms with their narrower terms during loading. These pre-exploded MeSH Headings are displayed in the MeSH Subject Headings (SH) field.

The Exploded Subheadings (XS) field contains the two-letter codes for the pre-exploded subheadings. Sometimes multiple MeSH Subheadings can be logically grouped together.  Such related groups of subheadings are "pre-exploded" under one broad subheading.  This means that all the grouped subheadings can be retrieved together by searching on the "pre-exploded" version of the broad subheading. These pre-exploded MeSH Headings are displayed in the MeSH Subject Headings (SH) field.

The Year of Publication (YR) field contains the year in which the article was published.

This field displays as part of the Source (SO).