| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| previous studies have found that | 0.41 | 0.6 | 622 | 100 |
| studies have found that | 1.39 | 0.7 | 1823 | 71 |
| several recent studies have found that | 1.44 | 0.5 | 7979 | 25 |
| previous studies have revealed that | 1.26 | 1 | 9027 | 61 |
| previous studies have found | 1.5 | 0.9 | 2077 | 24 |
| previous studies have demonstrated that | 0.42 | 0.4 | 5283 | 70 |
| many studies have shown that | 1.57 | 0.2 | 706 | 67 |
| numerous studies have shown that | 0.58 | 0.9 | 716 | 78 |
| existing studies have shown that | 1.03 | 0.5 | 987 | 23 |
| previous studies indicated that | 0.34 | 0.3 | 8191 | 22 |
| recent studies have shown that | 1.64 | 1 | 8288 | 77 |
| previous study has shown that | 0.45 | 1 | 4516 | 51 |
| recent studies reveal that | 0.7 | 0.3 | 465 | 4 |
| previous study showed that | 1.44 | 0.7 | 8245 | 72 |
| some studies suggested that | 0.47 | 1 | 2734 | 41 |
| recent studies show that | 0.87 | 0.1 | 7833 | 39 |
