1. Original research
aka Original article/ Research article
Full reports of data from primary research
Gives details of research methodologies and findings
3000 - 12000 words
2. Short reports
aka Letters/ Brief communications
Brief reports of data from original research
Gives a quick glimpse into a research work even before it is actually published
3. Review articles
Comprehensive summary of original research focused on a particular topic
Gives a consolidated account of recent progress in a particular field
8000 - 40000 words
4. Case studies
Reports of specific instances of interesting phenomenon
Usually published in the medical field and creates awareness about previously unknown/ emerging pathologies and pharmaceuticals
3000 - 10000 words
5. Methods (Methodologies)
Presents experimental methods or procedures that may be novel or may be a better version of an existent method/ procedure
Describes a demonstrable advance in existing methods
4000 - 8000 words
6. Clinical trials
Reports results of controlled studies involving statistically determined population groups Provide practical perspectives for usage of procedures and drugs
3000 - 10000 words
7. Commentary
aka Opinion/ Perspective/ View point Review fundamental concepts/ widely accepted ideas derived from primary researches in a particular field
Personal opinions/ point of view (including criticism) backed by evidence
Promote discussions in the scientific community
~2000 words
8. Book review
Provide insights and perspectives on published books
Critical evaluation of books
600 - 2000 words
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