Table 2.
Whole-brain mean values and percent differences for four global cortical metrics in very preterm and full-term infants (corrected for PMA at MRI scan and TTV).
| Surface Metrics | Very Preterm Infants (N = 94) | Full-term Infants (N = 46) | Relative Percent Difference, Mean (95% CI) | P |
|---|---|---|---|---|
| Gyrification Index (unitless) | 2.49 (0.20) | 2.67 (0.30) |
−6.74% (−9.90%, −3.58%) |
<0.001 |
|
Surface Area (mm2) |
81210.10 (4527.51) |
86252.30 (6836.50) |
−5.85% (−8.07%, −3.62%) |
<0.001 |
| Curvature (1/mm) | 2.14 (0.25) | 2.02 (0.38) |
5.94% (0.68%, 11.20%) |
0.002 |
| Sulcal Depth (unitless; mean convexity/concavity) | 24.54 (3.42) | 24.66 (5.16) |
−0.49% (−5.39%, 6.36%) |
0.84 |