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TABLE 4: 
Inter-sequence and inter-imaging unit mean coefficients of variation (standard error of the means) for the λ1, λ2, and λ3 histogram-derived metrics
Inter-Sequence (%)Inter-Imaging Unit (%)P*
Average λ11.63 (0.1)4.13 (0.4)<0.001
λ1 peak height5.18 (0.6)6.93 (0.8)n.s.
λ1 peak position1.78 (0.2)4.76 (0.6)<0.001
Average λ22.02 (0.3)5.39 (0.6)<0.001
λ2 peak height3.30 (0.3)4.37 (0.5)n.s.
λ2 peak position1.50 (0.1)5.33 (0.6)<0.001
Average λ34.71 (0.5)6.80 (0.7)0.009
λ3 peak height5.49 (0.6)6.89 (0.8)n.s.
λ3 peak position6.06 (0.7)12.19 (1.1)<0.001
  • Note.—λ1–λ3 = eigenvalues of the diffusion tensor; n.s., not significant.
  • * Statistical analysis: comparisons were conducted by using a bootstrap resampling technique.