| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| maturation internal validity | 1.94 | 0.8 | 8227 | 33 | 28 |
| maturation | 0.97 | 0.5 | 9930 | 17 | 10 |
| internal | 1.53 | 0.2 | 3714 | 50 | 8 |
| validity | 1.84 | 0.2 | 7751 | 13 | 8 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| maturation internal validity | 0.46 | 0.1 | 5110 | 68 |
