Table 4.
Correlations of control variables with structure volumes.
| ROI (mm3) | TIV | Sex | Cigarettes/day during pregnancy | Socioeconomic status | Lead concentration (ug/dl) | Age (year) |
|---|---|---|---|---|---|---|
| GRAY MATTER ROIs | ||||||
| L Caudate | 0.520 | −0.215 | −0.113 | 0.087 | −0.168 | −0.082 |
| (0.001) | (0.079) | (0.350) | (0.468) | (0.161) | (0.499) | |
| R Caudate | 0.496 | −0.222 | −0.066 | 0.057 | −0.126 | −0.069 |
| (0.001) | (0.052) | (0.584) | (0.638) | (0.296) | (0.565) | |
| L NA | 0.421 | −0.367 | 0.004 | 0.061 | 0.120 | −0.080 |
| (0.001) | (0.002) | (0.975) | (0.614) | (0.321) | (0.505) | |
| R NA | 0.504 | −0.381 | 0.041 | −0.012 | 0.148 | −0.081 |
| (0.001) | (0.001) | (0.735) | (0.920) | (0.218) | (0.502) | |
| L Hippocampus | 0.349 | −0.137 | −0.109 | −0.068 | −0.141 | 0.058 |
| (0.003) | (0.255) | (0.364) | (0.574) | (0.242) | (0.630) | |
| R Hippocampus | 0.402 | −0.167 | −0.076 | −0.059 | −0.043 | 0.016 |
| (0.002) | (0.307) | (0.526) | (0.625) | (0.719) | (0.892) | |
| WHITE MATTER ROI | ||||||
| CC | 0.184 | 0.043 | –0.325 | 0.166 | −0.209 | 0.087 |
| (0.124) | (0.723) | (0.006) | (0.166) | (0.080) | (0.470) | |
Bold print denotes significance at p ≤ 0.1. Values are Pearson r (p). NA, nucleus accumbens; CC, corpus callosum. Sex (male = 1, female = 2).