| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| what drug class is aminophylline | 1.52 | 0.8 | 5867 | 1 | 32 |
| what | 1.37 | 0.7 | 1734 | 39 | 4 |
| drug | 1.45 | 1 | 7312 | 98 | 4 |
| class | 0.12 | 0.4 | 8153 | 29 | 5 |
| is | 0.22 | 0.6 | 6476 | 77 | 2 |
| aminophylline | 0.25 | 0.3 | 8929 | 52 | 13 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| what drug class is aminophylline | 1.07 | 0.1 | 3053 | 13 |
