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MEDLINE Indexing Online Training Course

Check Tags

Comparative Study and Chronological Tags

Comparative Study

Used with any article that is a comparison of two or more concepts. The term "comparative study" or the phrase "comparative effects" often appear in articles that require this check tag. All other check tags that apply to the article (MALE, FEMALE, ANIMAL, AGE, etc) should also be checked.

Chronological tags

Used in conjunction with the publication types HISTORICAL ARTICLE, BIOGRAPHY or AUTOBIOGRAPHY.

If the material covers a time period such as 15th century through 20th century, check each time period tag covered.

Centuries begin on Jan 1 of the first year of the new century, for example Jan 1 2001 begins the 21st century.

c Ancient
d Medieval
f 15th Cent
g 16th Cent
h 17th Cent
i 18th Cent
j 19th Cent
k 20th Cent
o 21st Cent
1

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