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Table 1 Pairwise comparison of ROI methods, by mean FA across both sides, per section of the optic tracts

From: Impact of region-of-interest method on quantitative analysis of DTI data in the optic tracts

Method 1 Method 2 Section 1 Section 2 Section 3
Mean (95 % CI) p-value Mean (95 % CI) p-value Mean (95 % CI) p-value
FA-skeleton Manual T1W 0.07 (0.03; 0.11) <.0001 0.10 (0.06; 0.14) <.0001 0.16 (0.11; 0.21) <.0001
  Manual b0 0.01 (−0.00; 0.03) 0.1501 0.01 (−0.01; 0.04) 0.4104 0.03 (−0.00; 0.07) 0.0559
  Tractography 0.15 (0.10; 0.19) <.0001 0.10 (0.04; 0.16) 0.0003 0.17 (0.12; 0.22) <.0001
Manual T1W Manual b0 −0.06 (−0.10; −0.01) 0.0047 −0.09 (−0.13; −0.04) 0.0001 −0.13 (−0.18; −0.07) <.0001
  Tractography 0.07 (0.02; 0.13) 0.0051 0.00 (−0.06; 0.06) 0.9999 0.01 (−0.04; 0.06) 0.9573
Manual b0 Tractography 0.13 (0.08; 0.18) <.0001 0.09 (0.02; 0.15) 0.0046 0.14 (0.08; 0.20) <.0001
  1. Pairwise difference in FA between ROI methods. Confidence intervals and p-values were corrected for multiplicity using the Tukey-Cramer method