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Table 3 Correlations between clinical motor grade and diffusion tensor imaging metrics (fractional anisotropy, mean diffusivity, and fiber count) of motor corticospinal and sensory corticothalamic tracts in cerebral palsy children (no = 70)

From: Does motor deficit in children with cerebral palsy correlate with diffusion tensor metrics abnormalities in thalamocortical pathways?

   Right CST Left CST Right CTR Left CTR
FA versus GMFCS r − 0.749** − 0.651** − 0.653** − 0.642**
p < 0.001 < 0.001 < 0.001 < 0.001
MD versus GMFCS r 0.216* 0.040 0.408** 0.422**
p 0.034 0.701 0.005 < 0.001
Fibers count versus GMFCS r − 0.834** − 0.815** − 0.708** − 0.728**
p < 0.001 < 0.001 < 0.001 < 0.001
  1. r Spearman correlation coefficient
  2. **Statistically significant
  3. Range of correlation coefficient values r: − 1.00 to − 0.80 very strong negative; − 0.79 to − 0.60 strong negative; − 0.59 to − 0.40 moderate negative; − 0.39 to − 0.20 weak negative; − 0.19 to − 0.01 very weak negative; r: 0.80 to 1.00 very strong positive; 0.60 to 0.79 strong positive; 0.40 to 0.59 moderate positive; 0.20 to − 0.39 weak positive; 0.00 to 0.19 very weak positive