Table 1. Parameter values of OPLS-DA models.
| OPLS-DA model | Noa | R2X(cum)b | R2Xc | Q2(cum)d |
|---|---|---|---|---|
| Control vs. male | 1P + 2O | 0.537 | 0.213 | 0.785 |
| Control vs. female | 1P + 2O | 0.631 | 0.292 | 0.823 |
| Male vs. female | 1P + 2O | 0.874 | 0.465 | 0.87 |
Notes.
a
No, the number of predictive (P) and orthogonal (O) components.
b
The R2X(cum) value is the predictive and orthogonal variation in model samples (X) explained by the model.
c
The R2X value is the amount of variation in X which is correlated to Y (response matrix).
d
The Q2(cum) value describes the predictive ability of the model, based on sevenfold-cross validation.