Table 2

Statistical analysis of serum YKL-40 levels

Test groupMean YKL-40 levelSDP
Normal49.545.3<0.001
GBM159.2107.3
Normal49.545.3<0.001
Lower-grade glioma116.152.9
Lower-grade glioma116.152.90.037
GBM159.2102.4
Low tumor burden144.7140.90.621
High tumor burden163.884.2