highly significantp = 4.46 e −5
We also re-ran the model, including average mean diffusion in the TBSS-derived skeleton as an additional predictor, which had minor effects on the results, reducing the p-value for atrophy slightly (0.031), while retrieval activity was still highly significant ( p = 4.46 e −5 ) and R 2 (adjusted) = 0.237.