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Table 1: Average fractional anisotropy and mean diffusivity in regions of interest in the anterior, lateral, posterior, and central spinal cord at the C2–C3 level, in 24 patients with multiple sclerosis and 24 age- and sex-matched normal volunteers
Anterior Lateral Posterior Central
Left Right Left Right Left Right
Fractional anisotropy 
    Cases (n = 24) 0.50 ± 0.12 0.50 ± 0.12 0.56 ± 0.12 0.55 ± 0.10 0.52 ± 0.11 0.52 ± 0.12 0.53 ± 0.10
    Controls (n = 24) 0.51 ± 0.09 0.49 ± 0.10 0.69 ± 0.11 0.69 ± 0.10 0.63 ± 0.11 0.64 ± 0.11 0.58 ± 0.10
    P values .63 .67 <.0001 <.0001 .001 .001 .05
Mean diffusivity (×10⁻³ mm⁻²s⁻¹) 
    Cases 0.92 ± 0.21 0.99 ± 0.30 0.91 ± 0.29 0.92 ± 0.26 0.92 ± 0.22 0.92 ± 0.24 0.89 ± 0.18
    Controls 0.86 ± 0.17 0.86 ± 0.17 0.79 ± 0.16 0.75 ± 0.25 0.80 ± 0.11 0.81 ± 0.12 0.81 ± 0.14
    P values .33 .06 .06 .02 .03 .06 .077