1. Description of Data Field:

Variable Size
Mandatory Filling Repetitive

2. Data Element Definition:

These are descriptors that represent the types of content of the documents: format, structure, or design of the study.

3. Notes:

a) Select one or more types of publications from the index.

b) To indicate the type of publication, consult DeCS/MeSH and follow the indexing manual guidelines.

4. Examples:

a) Controlled Clinical Trial
b) Biography
c) Historical Article