Table 2.
Stepwise linear regression analysis of cytochrome P450 (CYP) activities as measured by specific metabolite formation from probe substrates and THC metabolite formation. Y ~ X indicates the linear regression with Y as a response variable and X as the predictor. Added predictor as indicated was included to the linear regression one at a time to determine whether it improves the goodness of fit. The absolute p-value from the analysis of variance (ANOVA) test is shown.
| Linear Regression | Added Predictor | P-value |
|---|---|---|
| 11-OH-THC ~ CYP2C9 | CYP3A | 0.949 |
| CYP2C19 | 0.122 | |
| M2 ~ CYP3A | CYP2C9 | 0.369 |
| CYP2C19 | 0.728 | |
| M3 ~ CYP3A | CYP2C9 | 0.0721 |
| CYP2C19 | 0.00000000000880 | |
| M3 ~ CYP3A + CYP2C19 | CYP2C9 | 0.344 |
| M4 ~ CYP3A | CYP2C9 | 0.594 |
| CYP2C19 | 0.844 |