Background:
The objective of the present review is to perform the 1st bibliometric analysis of sleep disorders research.
Methods:
The data was retrieved from Scopus in July, 2020 for detail analysis.
Results:
The 1st precise document about the sleep disorder was published in 1945. Till 15th July 2020, total 69657 documents were found in Scopus database. Approximately eighty two percent (57013/81.87%) documents are published in the
last twenty years (from 2001-2020). We calculated the per year growth rate (GR) of publications (from 2000-onwards). The
highest number of documents are published in 2019 (4337/7.90% of 57013) followed by 2018 (4249/7.74% of 57013) and
2017 (3974/7.24% of 57013). Infact the productivity index (PI) for 1950-1960 and 2011-2020 era was found to be 100.21.
We also provided the details of the top 50 countries with maximum number of publications (from 1945 to July 2020). The
top three (3) countries are USA with 24262 publications (34.83%), followed by UK (5566/8.0%) and Germany
(4791/6.87%). We also performed the co-words analysis. Infact total 956643 (0.95 million) keywords were retrieved from
69657 published documents. After critical analysis we categorized them in different groups to show the trend in various domains. In the next phase of the study, only those documents were analyzed which contained the phrase “sleep disorder” in
the titles of the publications. Total 3626 documents were found. We calculated the per year growth rate (GR). The continental distribution, the list of top twenty authors, sources/journals, departments or institutes, countries and research documents
with highest citations are provided. By VOSviewer analysis, 6752, 36511 and 11473 terms in titles of the manuscripts, abstracts and keywords were recorded, respectively. This may help in describing the overall trend in these publications.
Conclusions:
The present study provides a detail list of top authors, departments, countries, sources and top 20 most cited
documents. The co-words analysis may help in describing the trends in the field of sleep disorders.