| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| therapeutic level of theophylline | 0.48 | 1 | 6808 | 13 | 33 |
| therapeutic | 1.46 | 0.1 | 116 | 51 | 11 |
| level | 1.3 | 0.1 | 3077 | 21 | 5 |
| of | 0.46 | 0.6 | 6810 | 5 | 2 |
| theophylline | 1.67 | 0.6 | 3273 | 40 | 12 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| therapeutic level of theophylline | 0.93 | 0.9 | 1917 | 7 |
