Table 5.
Pearson correlation coefficients (A) and partial correlation coefficients (B) matrices between the University Selection Tests scores and most significant parameters.
| PSU | LPSU | MPSU | IA | GMV | rIFG | BW | BL | Z-HC | BMI | |
|---|---|---|---|---|---|---|---|---|---|---|
| (A) | ||||||||||
| LPSU | .959**** | – | ||||||||
| MPSU | .969**** | .860**** | – | |||||||
| IA | .805**** | .758**** | .794**** | – | ||||||
| GMV | .575**** | .563**** | .548**** | .460**** | – | |||||
| rIFG | .442**** | .395**** | .456**** | .392**** | .264** | – | ||||
| BW | .139 | .139 | .127 | .108 | .228* | .029 | – | |||
| BL | .252* | .249* | .233* | .182 | .154 | .007 | .654**** | – | ||
| Z-HC | .393**** | .407**** | .335*** | .294** | .717**** | .107 | .316** | .258* | – | |
| BMI | −.261** | −.217* | −.293** | −.275** | −.114 | .113 | .224* | −.016 | .333*** | – |
| SES | .561**** | .567**** | .516**** | .440**** | .361**** | .187 | .056 | .142 | .317** | −.094 |
| LPSU | MPSU | PSU | IA | GMV | BW | BL | Z-HC | BMI | SES | |
|---|---|---|---|---|---|---|---|---|---|---|
| (B) | ||||||||||
| MPSU | .23** | |||||||||
| IA | .420*** | .470*** | .670*** | |||||||
| GMV | .210* | .160 | .310** | −.090 | ||||||
| BW | −.110 | −.080 | −.090 | .100 | .130 | |||||
| BL | .130 | .040 | .170 | −.120 | −.150 | .560*** | ||||
| Z-HC | .005 | −.020 | −.030 | .080 | .670*** | .070 | .050 | |||
| BMI | .100 | .030 | .060 | −.230* | −.390*** | .190 | −.160 | .510*** | ||
| SES | .140 | .140 | .280** | .020 | .007 | .060 | .040 | .060 | .010 | |
| rIFG | .070 | .260* | .240* | −.040 | .120 | −.190 | .120 | −.080 | .110 | .030 |
PSU: University Selection Test; LPSU, language University Selection Test score; MPSU, mathematics University Selection Test score; IA, intellectual ability; GMV, gray matter volume; BW, birth weight; BL, birth length; Z-HC, head circumference-for-age Z-score; BMI, body mass index; rIFG, right inferior frontal gyrus thickness. * p < .05; ** p < .01; *** p < .001; **** p < .0001.