highly significantP<0.001
More specifically, right kidney viscosity increased from stage 1 (1.71±0.11 Pa·s) to stage 5 (2.36±0.21 Pa·s), showing highly significant intergroup differences (MANOVA: F =316.48, P<0.001), whereas left kidney viscosity similarly progressed from stage 1 (1.72±0.13 Pa·s) to stage 5 (2.33±0.25 Pa·s) (MANOVA: F =238.93, P<0.001).