| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| clinical trials register usa | 0.83 | 0.6 | 7416 | 53 | 28 |
| clinical | 1.42 | 0.4 | 3941 | 98 | 8 |
| trials | 0.49 | 0.3 | 9045 | 11 | 6 |
| register | 1.19 | 1 | 5803 | 49 | 8 |
| usa | 0.24 | 0.2 | 6029 | 54 | 3 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| clinical trials register usa | 0.59 | 0.6 | 8536 | 18 |
| clinical trials registry usa | 0.51 | 0.9 | 1176 | 18 |
| register of clinical trials | 1.28 | 0.1 | 961 | 37 |
| registration of clinical trials | 0.36 | 0.1 | 1546 | 43 |
| clinical trials register search | 1.35 | 0.4 | 9879 | 37 |
| clinical trials register uk | 1.54 | 1 | 858 | 60 |
| clinical trial for registration | 0.51 | 0.7 | 8489 | 87 |
| clinical trials in usa | 0.19 | 0.1 | 5901 | 96 |
| usa gov clinical trials | 1.27 | 0.6 | 945 | 72 |
| us clinical trials website | 1.14 | 0.5 | 4835 | 36 |
| clinical trials gov us | 1.48 | 0.5 | 7753 | 7 |
| list of clinical trial registries | 0.89 | 0.4 | 4637 | 25 |
| trial registration clinicaltrials.gov | 1.36 | 0.7 | 9252 | 14 |
| clinicaltrials.gov registration | 0.35 | 0.3 | 7441 | 73 |
| clinical trial online registration | 1.77 | 0.8 | 8358 | 43 |
| http://register.clinicaltrials.gov | 1.62 | 1 | 1849 | 74 |
| clinicaltrials.gov registry | 1.04 | 0.2 | 7033 | 1 |
| register.clinicaltrials.gov | 1.65 | 0.6 | 2280 | 77 |
| registered in clinicaltrials.gov | 0.08 | 0.4 | 8700 | 69 |
