Multi-linear regression analysis at cervical and thoracic levels.

Normalization coefficients derived by multi-linear regression analysis for Model 3 (age, TICV and sagittal_vertebra_area) and Model 2 (age, TICV, ap_vertebra_diameter) with total cross-sectional area (TCA) as outcome variable at the C3-C4, T8-T9 and T9-T10 disc levels.Normalization coefficients derived by multi-linear regression analysis for Model 2a (TICV, ap_vertebra_diameter) and gray matter (GM) area as outcome variable at the C3-C4, T8-T9 and T9-T10 disc levels.The adjusted R2 and the %RSD (ratios of the group standard deviation and the respective means) for the calculated values are reported. %RSDmeas refers to the non-normalized measured data.The mean values of the independent variables for the total cohort of subjects are reported in the legend of Table 6.Multi-linear regression analysis at cervical and thoracic levels.