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. 2021 Feb 10;11:3446. doi: 10.1038/s41598-021-82840-x

Table 1.

County and research field statistics of the clinical trials used in the study.

Countries # of Trials Countries # of Trials
(a) Top-10 countries/regions
United States 106,930 U. K. 9,084
France 16,460 Korea (R) 7,355
Canada 15,558 Belgium 6,008
China 13,948 Australia 5,717
Germany 10,004 Italy 5,664
MeSH Terms # of Trials MeSH Terms # of Trials
(b) Top-10 research fields (DM stands for “diabetes mellitus”)
DM (Diabetes mellitus) 9,315 Carcinoma 4,930
Breast Neoplasms 7,049 Lung neoplasms 4,758
Syndrome 6,591 Leukemia 4,642
DM (Type 2) 5,781 HIV Infections 4,576
Disease 5,079 Depression 4,478