Table 4 Correlations between DTI metrics and scores of cognitive tests at all timepoints (results FDR corrected at p < 0.05).

From: Signatures of white-matter microstructure degradation during aging and its association with cognitive status

 

FA cluster 1

FA cluster 2

AD cluster 1

RD cluster 1

RD cluster 2

MD cluster 1

LTS

r = 0.33* (p = 0.047)

r = 0.39* (p = 0.020)

r = − 0.42* (p = 0.010)

r = − 0.31 (p = 0.069)

r = − 0.46** (p = 0.005)

r = − 0.46** (p = 0.005)

CLTR

r = 0.17 (p = 0.32)

r = 0.19 (p = 0.28)

r = − 0.25 (p = 0.13)

r = − 0.13 (p = 0.44)

r = − 0.25 (p = 0.13)

r = − 0.25 (p = 0.13)

DR

r = 0.079 (p = 0.66)

r = 0.14 (p = 0.40)

r = − 0.072 (p = 0.68)

r = − 0.16 (p = 0.35)

r = − 0.13 (p = 0.44)

r = − 0.10 (p = 0.55)

SW

r = 0.15 (p = 0.37)

r = 0.017 (p = 0.91)

r = 0.057 (p = 0.72)

r = − 0.16 (p = 0.36)

r = 0.053 (p = 0.73)

r = 0.063 (p = 0.71)

SC

r = 0.51** (p = 0.001)

r = 0.45** (p = 0.005)

r = − 0.54** (p = 0.001)

r = − 0.33 (p = 0.054)

r = − 0.52** (p = 0.001)

r = − 0.54** (p = 0.001)

SWC

r = 0.35* (p = 0.040)

r = 0.28 (p = 0.092)

r = − 0.35* (p = 0.040)

r = − 0.21 (p = 0.23)

r = − 0.30 (p = 0.083)

r = − 0.31 (p = 0.066)

MMSE

r = 0.26 (p = 0.12)

r = 0.35* (p = 0.040)

r = − 0.20 (p = 0.26)

r = − 0.40* (p = 0.014)

r = − 0.28 (p = 0.092)

r = − 0.25 (p = 0.13)

  1. FA fractional anisotropy, AD axial diffusivity, MD mean diffusivity, RD radial diffusivity, LTS long-term storage, CLTR consistent long-term retrieval, DR delayed-recall, SW Stroop words, SC Stroop colors, SWC Stroop words/colors, MMSE Mini-Mental State Examination.
  2. Significance codes: *p < 0.05, **p < 0.01, ***p < 0.001.