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. Author manuscript; available in PMC: 2013 Feb 15.
Published in final edited form as: Neuroimage. 2011 Dec 1;59(4):3571–3581. doi: 10.1016/j.neuroimage.2011.11.057

Table 4.

Relationships between gestational age at birth and callosal tract volumes: whole corpus callosum (CC) and sub-regions.

Unadjusted β (95% CI)a p Adjusted β (95% CI)b p
Whole CC 1.09 (0.65, 1.5) <0.0005 0.98 (0.28, 1.7) 0.007
Genu 0.58 (0.28, 0.87) <0.0005 0.54 (0.07, 1.0) 0.02
RB 0.41 (0.18, 0.64) 0.001 0.43 (0.07, 0.78) 0.02
AMB 0.23 (0.03, 0.44) 0.03 0.30 (−0.03, 0.63) 0.07
PMB N/A N/A N/A N/A
Isthmus N/A N/A N/A N/A
Splenium 1.33 (0.85, 1.8) <0.0005 1.30 (0.54, 2.1) 0.001
a

Only other significant variables included in the model.

b

Adjusted for gestational age at MRI as well as other clinically relevant perinatal variables: gestational age at birth, gender, birth weight standard deviation score, bronchopulmonary dysplasia, postnatal corticosteroids, infection, intraventricular hemorrhage, and white matter injury. CI = Confidence interval, RB = rostral body, AMB = Anterior mid-body, PMB = Posterior mid-body, N/A = not applicable (no significant perinatal predictors), β = regression coefficient, which indicates the amount of change in the dependent variable for each unit change in the independent variable. Bolded = significant at p <0.01 level (corrected for multiple comparisons).