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Table 4 Regression models for ASD group describing processing speed scores’ lack of dependence on faxon and Daxon in the mid and posterior segments. As in the analyses reported in Table 3, analyses controlled for the number of voxels (NumVox) in the designated segment. Adjusted R2 (i.e., R2 adjusted for the number of predictors in the model) and uncorrected p values are reported

From: Diffusional kurtosis imaging of the corpus callosum in autism

Model

Predictors

Sig. (predictors)

Sig. (model)

R2 (model)

1 (DigitSC)

Covariate

NumVox (seg1)

.997

.254

.160

Investigated predictors

faxon (seg1)

.785

Daxon (seg1)

.110

ADextra (seg1)

.138

RDextra (seg1)

.587

2 (DigitSC)

Covariate

NumVox (seg2)

.614

.339

.023

Investigated predictors

faxon (seg2)

.371

Daxon (seg2)

.950

ADextra (seg2)

.498

RDextra (seg2)

.836

3 (DigitSC)

Covariate

NumVox (seg3)

.549

.738

− .1781

Investigated predictors

faxon (seg3)

.344

Daxon (seg3)

.894

ADextra (seg3)

.220

RDextra (seg3)

.630

4 (DigitSC)

Covariate

NumVox (seg4)

.407

.221

.190

Investigated predictors

faxon (seg4)

.061

Daxon (seg4)

.812

ADextra (seg4)

.099

RDextra (seg4)

.524

5 (DigitSC)

Covariate

NumVox (seg1)

.970

.870

− .2751

Investigated predictors

faxon (seg1)

.748

Daxon (seg1)

.830

ADextra (seg1)

.509

RDextra (seg1)

.723

6 (SS)

Covariate

NumVox (seg1)

.670

.372

.046

Investigated predictors

faxon (seg1)

.906

Daxon (seg1)

.261

ADextra (seg1)

.143

RDextra (seg1)

.963

7 (SS)

Covariate

NumVox (seg2)

.675

.362

.033

Investigated predictors

faxon (seg2)

.160

Daxon (seg2)

.550

ADextra (seg2)

.813

RDextra (seg2)

.386

8 (SS)

Covariate

NumVox (seg3)

.269

.339

.066

Investigated predictors

faxon (seg3)

.752

Daxon (seg3)

.180

ADextra (seg3)

.289

RDextra (seg3)

.308

9 (SS)

Covariate

NumVox (seg4)

.253

.375

.008

Investigated predictors

faxon (seg4)

.378

Daxon (seg4)

.354

ADextra (seg4)

.928

RDextra (seg4)

.921

10 (SS)

Covariate

NumVox (seg1)

.190

.394

.052

Investigated predictors

faxon (seg1)

.556

Daxon (seg1)

.564

ADextra (seg1)

.985

RDextra (seg1)

.939

  1. 1Negative adjusted R2 values indicate poor fit of the data