| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| register of clinical trials | 0.44 | 0.6 | 5935 | 99 | 27 |
| register | 1.53 | 0.4 | 527 | 71 | 8 |
| of | 1.27 | 0.5 | 956 | 98 | 2 |
| clinical | 1.24 | 0.8 | 4613 | 90 | 8 |
| trials | 1.09 | 0.4 | 6901 | 63 | 6 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| register of clinical trials | 0.35 | 0.6 | 759 | 59 |
| registry of clinical trials | 0.81 | 0.2 | 48 | 54 |
| eu clinical trials register | 1.61 | 0.7 | 1915 | 95 |
| german clinical trials register | 0.05 | 0.2 | 9485 | 51 |
| european union clinical trials register | 1.16 | 0.1 | 9976 | 16 |
| eudract clinical trials register | 0.46 | 1 | 5689 | 73 |
| gsk clinical trials register | 1.32 | 0.3 | 2782 | 67 |
| clinical trials registry india | 0.1 | 0.9 | 7962 | 63 |
| iranian registry of clinical trials | 1.92 | 0.3 | 9374 | 93 |
| australian clinical trials registry | 0.03 | 0.6 | 9614 | 65 |
| australia clinical trials registry | 1.46 | 0.3 | 3385 | 97 |
| anz clinical trials registry | 1.81 | 0.2 | 8600 | 20 |
| who international clinical trials registry | 0.58 | 0.2 | 9854 | 44 |
