| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| placebo variable | 1.35 | 0.6 | 7713 | 42 | 16 |
| placebo | 0.05 | 0.8 | 2925 | 84 | 7 |
| variable | 0.44 | 0.4 | 419 | 53 | 8 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| placebo variable | 1.6 | 0.1 | 5853 | 13 |
| placebo variable psychology | 1.52 | 0.8 | 386 | 5 |
| placebo variable definition | 0.32 | 0.9 | 4846 | 38 |
| is a placebo an independent variable | 1.74 | 0.9 | 6267 | 3 |
| is the placebo the dependent variable | 1.5 | 0.8 | 711 | 45 |
| is placebo effect a confounding variable | 0.33 | 0.8 | 8847 | 75 |
