Table 1.
Top 10 countries or regions and institutions that have contributed to clinical trial research for AS.
| Rank | Country | Number of publications | Number of citations | Average Number of citations | H-Index | Institutions | Number of publications | Number of citations | Average Number of citations | Location |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | USA | 385 | 24454 | 63.35 | 79 | Free University of Berlin | 184 | 17982 | 97.73 | GERMANY |
| 2 | GERMANY | 318 | 27066 | 85.11 | 89 | Charite Universitatsmedizin Berlin | 179 | 17027 | 95.12 | GERMANY |
| 3 | NETHERLANDS | 214 | 19034 | 88.94 | 66 | Humboldt University of Berlin | 179 | 17027 | 95.12 | GERMANY |
| 4 | CANADA | 187 | 13074 | 69.91 | 58 | Rheumazentrum Ruhrgebiet | 153 | 15286 | 99.91 | GERMANY |
| 5 | FRANCE | 157 | 13393 | 85.31 | 54 | Ruhr University Bochum | 149 | 14979 | 100.53 | GERMANY |
| 6 | ENGLAND | 155 | 8001 | 51.62 | 48 | UDICE-French Research Universities | 122 | 10675 | 87.5 | FRANCE |
| 7 | ITALY | 112 | 5799 | 51.78 | 36 | Assistance Publique Hopitaux Paris (APHP) | 111 | 10027 | 90.33 | FRANCE |
| 8 | CHINA | 109 | 2147 | 19.70 | 23 | Universite Paris Cite | 111 | 9991 | 90.01 | FRANCE |
| 9 | BELGIUM | 94 | 7454 | 79.30 | 39 | Leiden University | 106 | 9575 | 90.33 | NETHERLANDS |
| 10 | SPAIN | 78 | 3919 | 50.24 | 31 | Leiden University Medical Center (LUMC) | 103 | 9387 | 91.14 | NETHERLANDS |