A Model for Predicting Clinical Prognosis in Patients with WHO Grade 2 Glioma

Table 1

Baseline characteristics of the study population.

Variables	Training groups (n = 128)	Validation groups (n = 32)	values
Sex			0.380
Male	75	16
Female	53	16
Age (years)			0.461
≥40	79	22
<40	49	10
Preoperative KPS			0.361
≥80	94	26
<80	34	6
First presenting symptom			1.000
Seizures	64	16
Others	64	16
Extent of resection			0.750
Gross total	72	19
Nontotal resection or biopsy	56	13
Deep location			0.570
Yes	30	6
No	98	26
Gross tumor size			0.068
≥6 cm	53	19
<6 cm	75	13
Histology			0.102
Astrocytoma	52	8
Oligodendroglioma	76	24
1p19q			0.102
Codeleted	76	24
Not codeleted	52	8
IDH			0.082
Mutant	87	24
Wildtype	41	8
Chemotherapy			0.153
Yes	62	11
No	66	21
Radiotherapy			0.717
Yes	96	23
No	32	9