Table 3. Factor loading on the principal component (first unrotated factor) relating to WM integrity in patients with psychosis (PSY).
| Variables | Factor loading | Interpretation of the principal factor based on major components (variables with loading >0.4) |
|---|---|---|
| WM integrity (36.2% of variance) | Higher factor scores seen in patients with more anisotropic diffusion (higher FA), more prominent single fiber orientation (higher MoA), and uncompromised myelin integrity (lower RD). |
|
| FA Cluster A | +0.75 | |
| FA Cluster B | +0.79 | |
| FA Cluster C | +0.73 | |
| FA Cluster D | +0.80 | |
| FA Cluster E | +0.59 | |
| RD Cluster A | −0.83 | |
| RD Cluster B | −0.80 | |
| RD Cluster C | −0.84 | |
| RD Cluster D | −0.84 | |
| RD Cluster E | −0.82 | |
| AD Cluster A | −0.12 | |
| AD Cluster B | +0.34 | |
| AD Cluster C | −0.10 | |
| AD Cluster D | +0.33 | |
| AD Cluster E | −0.10 | |
| MoA Cluster A | +0.43 | |
| MoA Cluster B | +0.46 | |
| MoA Cluster C | +0.37 | |
| MoA Cluster D | +0.48 | |
| MoA Cluster E | +0.33 | |
FA: Fractional Anisotropy, RD: Radial Diffusion, AD: Axial Diffusion, MoA: Mode of Anisotropy.