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Table 2 Between-group differences for DWI data quality measures and for FA per tract

From: Alterations in the inferior longitudinal fasciculus in autism and associations with visual processing: a diffusion-weighted MRI study

  ASD (n = 17) TD (n = 17) F p value
  M SD M SD
DWI data quality measures
 Average translation 1.4279 0.3591 1.4271 0.3597 0.00 0.995
 Average rotation 0.0130 0.0047 0.0114 0.0041 1.16 0.290
 Percentage of slices with drop-out 0.2781 0.4457 0.1903 0.6030 0.23 0.633
 Average signal drop-out score 1.0381 0.0437 1.0187 0.0332 2.12 0.155
Fractional anisotropy (FA) per tract
 R inferior longitudinal fasciculus *,° 0.4395 0.0259 0.4622 0.0293 5.74 0.023
 L inferior longitudinal fasciculus * 0.4561 0.0319 0.4779 0.0286 4.43 0.043
 R anterior thalamic radiations 0.3900 0.0261 0.4012 0.0208 1.94 0.173
 L anterior thalamic radiations 0.3928 0.0248 0.4033 0.0295 1.26 0.269
 R cingulum-angular bundle 0.3131 0.0351 0.2983 0.0215 2.21 0.147
 L cingulum-angular bundle 0.2953 0.0379 0.2880 0.0303 0.38 0.541
 R cingulum-cingulate gyrus bundle 0.4161 0.0373 0.4302 0.0527 0.81 0.374
 L cingulum-cingulate gyrys bundle 0.4492 0.0468 0.4725 0.0596 1.61 0.214
 R corticospinal tract 0.5243 0.0196 0.5228 0.0397 0.02 0.888
 L corticospinal tract 0.5352 0.0230 0.5197 0.0307 2.79 0.105
 R superior longitudinal fasciculus—parietal 0.4037 0.0253 0.4103 0.0263 0.56 0.461
 L superior longitudinal fasciculus—parietal 0.4234 0.0485 0.4300 0.0381 0.19 0.662
 R superior longitudinal fasciculus—temporal 0.4711 0.0271 0.4816 0.0270 1.30 0.263
 L superior longitudinal fasciculus—temporal 0.4642 0.0304 0.4714 0.0274 0.52 0.477
 R uncinate fasciculus 0.4002 0.0247 0.4018 0.0276 0.03 0.862
 L uncinate fasciculus 0.3810 0.0247 0.3855 0.0244 0.28 0.603
 Forceps major (corpus callosum) 0.5252 0.0866 0.5326 0.0759 0.07 0.793
 Forceps minor (corpus callosum) 0.4976 0.0329 0.4938 0.0329 0.11 0.737
  1. Note. *p < .05, °group difference that survives Bonferroni correction (α = 0.05/18 = 0.0028), after outlier exclusion (F(1,30) = 12.40, p = .0014)