Table 2:

Cross-correlations of quantitative histologic measuresa

Untreated GBM (n = 28)
ESA RatioVSA RatioVPC/mm2
Mitotic activity0.098, ρ = 0.3250.066, ρ = 0.3580.737, ρ = 0.068
ESA ratio<0.001,b ρ = 0.9930.04,c ρ = 0.530
VSA ratio0.04,c ρ = 0.532

  • Note:—VPC indicates vascular profile count per square millimeter; VSA, vascular surface area; ESA, endothelial surface area.

  • ↵a Significance levels and Spearman ρ are shown.

  • ↵b Significance was P < .01.

  • ↵c Significance was P < .05.