Table 1.

Multivariate logistic regression model for IDH mutation.

Factors	OR (95% CI)	p-Value
Grade (II vs. III vs. IV)	0.101 (0.0–0.2)	<0.0001
CHI3L1 expression (low vs. high)	11.8 (6.0–23.2)	<0.0001
NTRK2 expression (low vs. high)	0.3 (0.2–0.5)	0.0001
1p19 co-deletion (present vs. absent)	25.0 (13.7–468.8)	<0.0001

OR, odds ratio; CI, confidence interval.