| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| plos one systematic review protocol | 0.12 | 0.9 | 9552 | 100 | 35 |
| plos | 1.91 | 0.6 | 9270 | 35 | 4 |
| one | 0.25 | 1 | 7864 | 57 | 3 |
| systematic | 1.77 | 1 | 5953 | 39 | 10 |
| review | 1.02 | 0.4 | 8050 | 72 | 6 |
| protocol | 0.35 | 0.3 | 4093 | 93 | 8 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| plos one systematic review protocol | 0.82 | 0.8 | 7492 | 12 |
