Abstract

The article itself is an abstract (of a paper or presentation) that usually has been presented or published separately.

Announcement

Material announced in the publication (may or may not be directly related to the publication)

Article Commentary

A work whose subject or focus is another article or articles; this article comments on the other article(s). (This value would be used when the editors of a publication invite an author with an opposing opinion to comment on a controversial article, and then publish the two together. The somewhat similar value “editorial” is reserved for commentary written by an editor or other publication staff.)

Book Review

Review or analysis of one or more printed or online books (The similar value “product-review” is used for product analyses.)

Books Received

Notification that items, e.g., books or other works, have been received by a publication for review or other consideration

Brief Report

A short and/or rapid announcement of research results

Calendar

A list of events

Case Report

Case study, case report, or other description of a case

Collection

Wrapper article for a series of sub-articles or responses; this value’s usage is restricted to articles whose intellectual content appears primarily in sub-article or response.

Discussion

Invited discussion related to a specific article or issue

Dissertation

Thesis or dissertation written as part of the completion of a degree of study

Editorial

Opinion piece, policy statement, or general commentary, typically written by staff of the publication (The similar value “article-commentary” is reserved for a commentary on a specific article or articles, which is written by an author with a contrasting position, not an editor or other publication staff.)

In Brief

Summary or teaser of items in the current issue

Introduction

An introduction to a publication, or to a series of articles within a publication, etc., typically for a special section or issue

Letter

Letter to a publication, typically commenting upon a published work

Meeting Report

Report of a conference, symposium, or meeting

News

News item, normally current but atypically historical

Obituary

Announcement of a death, or the appreciation for a colleague who has recently died

Oration

Reprint of a speech or oral presentation

Partial Retraction

Retraction or disavowal of part(s) of previously published material

Product Review

Description, analysis, or review of a product or service, for example, a software package (The similar value “book-review” is used for analyses of books.)

Rapid Communication

Fast-breaking research update or other news item

Reply

Reply to a letter or commentary, typically by the original author commenting upon the comments

Reprint

Reprint of a previously published article

Research Article

Article reporting on primary research (The related value “review-article” describes a literature review, research summary, or state-of-the-art article.) Clinical trials is categorised in this group.

Retraction

Retraction or disavowal of previously published material

Review Article

Review or state-of-the-art summary article (The related value “research-article” describes original research.) Systematic review or Meta analysis is categorised in this type.

Translation

Translation of an article originally produced in a different language

Methods Article

Study protocol articles can be for proposed or ongoing prospective clinical research, and should provide a detailed account of the hypothesis, rationale and methodology of the study.