Table 4.
Correlations between absolute and relative brain volumes and infant age at scan counted from estimated due date
| Cerebral structures | Absolute volumes | Relative volumes | ||||
|---|---|---|---|---|---|---|
| All (N = 68) | Males (N = 31) | Females (N = 37) | All (N = 68) | Males (N = 31) | Females (N = 37) | |
| p (R) | p (R) | p (R) | p (R) | p (R) | p (R) | |
| ICV | – | 0.002* (0.540) | – | |||
| TBV | – | 0.001* (0.552) | – | |||
| TWM | – | – | – | – | < 0.001* (− 0.637) | 0.005*(− 0.454) |
| TGM | – | – | – | < 0.001* (0.605) | < 0.001* (0.650) | 0.001* (0.538) |
| Left | – | – | – | < 0.001* (0.576) | < 0.001* (0.633) | 0.001* (0.516) |
| Right | – | – | – | < 0.001* (0.480) | 0.001* (0.578) | – |
| TCV | – | < 0.001* (0.645) | – | < 0.001* (0.559) | < 0.001* (0.682) | 0.006* (0.446) |
| Frontal lobe | – | – | – | – | – | 0.002* (− 0.486) |
| Left | – | – | – | – | – | 0.004* (− 0.465) |
| Right | – | – | – | – | – | 0.004* (− 0.461) |
| Parietal lobe | – | – | – | – | – | – |
| Left | – | – | – | – | – | – |
| Right | – | – | – | – | – | – |
| Temporal lobe | – | – | – | – | – | – |
| Left | – | – | – | – | – | – |
| Right | – | – | – | – | – | – |
| Occipital lobe | – | – | – | – | – | 0.030* (0.357) |
| Left | – | – | – | – | – | 0.017* (0.390) |
| Right | – | – | – | – | – | – |
Pearson has been used for normally distributed values and Spearman for non-normally distributed values. Only statistically significant (p < 0.05) results are listed and marked with an asterisk. Bonferroni correction for multiple comparisons corresponding to p < 0.0028. p values meeting the significance criteria are bolded
DD age counted from estimated due date, ICV intracranial volume, TBV total brain volume, TGM total gray matter volume, TCV total cortical volume, – no correlation/non-significant, ICV intracranial volume, TBV total brain volume, TWM total white matter, TGM total gray matter volume, TCV total cortical volume