Address for correspondence: Dr. R V Subramanyam, Department of Oral Pathology and Microbiology, Drs Sudha and Nageswara Rao Siddhartha Institute of Dental Sciences, Chinoutpalli, Gannavaram - 521 286, Andhra Pradesh, India. E-mail: moc.liamg@vrarbus
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Reading scientific literature is mandatory for researchers and clinicians. With an overflow of medical and dental journals, it is essential to develop a method to choose and read the right articles.
To outline a logical and orderly approach to reading a scientific manuscript. By breaking down the task into smaller, step-by-step components, one should be able to attain the skills to read a scientific article with ease.
The reader should begin by reading the title, abstract and conclusions first. If a decision is made to read the entire article, the key elements of the article can be perused in a systematic manner effectively and efficiently. A cogent and organized method is presented to read articles published in scientific journals.
One can read and appreciate a scientific manuscript if a systematic approach is followed in a simple and logical manner.
Keywords: Articles, journal, reading, research, systematicJohn Naisbitt“We are drowning in information but starved for knowledge.”
It has become essential for the clinicians, researchers, and students to read articles from scientific journals. This is not only to keep abreast of progress in the speciality concerned but also to be aware of current trends in providing optimum healthcare to the patients. Reading scientific literature is a must for students interested in research, for choosing their topics and carrying out their experiments. Scientific literature in that field will help one understand what has already been discovered and what questions remain unanswered and thus help in designing one's research project. Sackett (1981)[1] and Durbin (2009)[2] suggested various reasons why most of us read journal articles and some of these are listed in Table 1 .
Common reasons for reading journal articles
The scientific literature is burgeoning at an exponential rate. Between 1978 and 1985, nearly 272,344 articles were published annually and listed in Medline. Between 1986 and 1993, this number reached 344,303 articles per year, and between 1994 and 2001, the figure has grown to 398,778 articles per year.[3] To be updated with current knowledge, a physician practicing general medicine has to read 17 articles a day, 365 days a year.[4]
In spite of the internet rapidly gaining a strong foothold as a quick source of obtaining information, reading journal articles, whether from print or electronic media, still remains the most common way of acquiring new information for most of us.[2] Newspaper reports or novels can be read in an insouciant manner, but reading research reports and scientific articles requires concentration and meticulous approach. At present, there are 1312 dentistry journals listed in Pubmed.[5] How can one choose an article, read it purposefully, effectively, and systematically? The aim of this article is to provide an answer to this question by presenting an efficient and methodical approach to a scientific manuscript. However, the reader is informed that this paper is mainly intended for the amateur reader unaccustomed to scientific literature and not for the professional interested in critical appraisal of journal articles.
Different types of papers are published in medical and dental journals. One should be aware of each kind; especially, when one is looking for a specific type of an article. Table 2 gives different categories of papers published in journals.
Types of articles published in a journal
In general, scientific literature can be primary or secondary. Reports of original research form the “primary literature”, the “core” of scientific publications. These are the articles written to present findings on new scientific discoveries or describe earlier work to acknowledge it and place new findings in the proper perspective. “Secondary literature” includes review articles, books, editorials, practice guidelines, and other forms of publication in which original research information is reviewed.[6] An article published in a peer-reviewed journal is more valued than one which is not.
An original research article should consist of the following headings: Structured abstract, introduction, methods, results, and discussion (IMRAD) and may be Randomized Control Trial (RCT), Controlled Clinical Trial (CCT), Experiment, Survey, and Case-control or Cohort study. Reviews could be non-systematic (narrative) or systematic. A narrative review is a broad overview of a topic without any specific question, more or less an update, and qualitative summary. On the other hand, a systematic review typically addresses a specific question about a topic, details the methods by which papers were identified in the literature, uses predetermined criteria for selection of papers to be included in the review, and qualitatively evaluates them. A meta-analysis is a type of systematic review in which numeric results of several separate studies are statistically combined to determine the outcome of a specific research question.[7–9] Some are invited reviews, requested by the Editor, from an expert in a particular field of study.
A case study is a report of a single clinical case, whereas, a case series is a description of a number of such cases. Case reports and case series are description of disease (s) generally considered rare or report of heretofore unknown or unusual findings in a well-recognized condition, unique procedure, imaging technique, diagnostic test, or treatment method. Technical notes are description of new, innovative techniques, or modifications to existing procedures. A pictorial essay is a teaching article with images and legends but has limited text. Commentary is a short article on an author's personal opinion of a specific topic and could be controversial. An editorial, written by the editor of the journal or invited, can be perspective (about articles published in that particular issue) or persuasive (arguing a specific point of view). Other articles published in a journal include letters to the editor, book reviews, conference proceedings and abstracts, and abstracts from other journals.[10]
Not all research articles published are excellent, and it is pragmatic to decide if the quality of the study warrants reading of the manuscript. The first step for a reader is to choose a right article for reading, depending on one's individual requirement. The next step is to read the selected article methodically and efficiently.[2] A simple decision-making flowchart is depicted in [ Figure 1 ], which helps one to decide the type of article to select. This flowchart is meant for one who has a specific intent of choosing a particular type of article and not for one who intends to browse through a journal.
Schematic flowchart of the first step in choosing an article to read
