Changing trends in clinical research literature on PubMed database from 1991 to 2020.

ABSTRACT:

Background

Clinical research publications have become the dominant source and basis of clinical evidence-based decision-making. Exploring the type and quantity of clinical research publications in the PubMed database is useful for clarifying the changing trends of clinical research development in recent years. Therefore, a longitudinal analysis of the type and quantity of clinical research publications in the PubMed database over three decades was conducted.

Methods

The PubMed database was searched to retrieve clinical research according to the type and year of publication from January 1, 1991 to December 31, 2020. The research types were classified as primary and secondary literature.

Results

A total of 1,078,404 primary literatures were retrieved and the constituent

SUBMITTER: Zhao X 

PROVIDER: S-EPMC9208110 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature