| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| what are clinical trials nih | 0.4 | 0.4 | 5804 | 67 |
| nih clinical trials | 0.47 | 0.8 | 706 | 51 |
| nih clinical trials database | 1.87 | 0.8 | 2973 | 52 |
| nih clinical trials search | 0.21 | 0.1 | 2766 | 1 |
| nihr clinical trials | 1.24 | 0.6 | 7645 | 75 |
| nih clinical trials website | 1.46 | 0.9 | 4277 | 98 |
| nih clinical trials definition | 0.09 | 0.9 | 3992 | 53 |
| are clinical trials safe | 1.33 | 0.2 | 7375 | 16 |
| are clinical trials important | 0.61 | 0.1 | 728 | 71 |
| are clinical trials dangerous | 1.83 | 0.8 | 4405 | 39 |
| are clinical trials needed for 510k exemption | 0.01 | 0.5 | 4594 | 25 |
