| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| intractable headache syndromes | 1.37 | 0.8 | 6158 | 95 | 30 |
| intractable | 1.53 | 0.5 | 7020 | 30 | 11 |
| headache | 0.4 | 0.2 | 4822 | 14 | 8 |
| syndromes | 0.17 | 0.3 | 2496 | 70 | 9 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| intractable headache syndromes | 0.35 | 0.5 | 7237 | 26 |
