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Table 6 Univariate analysis of early progression of oligodendroglioma

From: Risk factors for early progression of diffuse low-grade glioma in adults

Variable

PFS ≤ 60 months (n = 14)

PFS > 60 months (n = 30)

χ2/Z

p-Value

Sex, n (%)

  

3.727

0.054

 Male

9 (64.3)

10 (33.3)

  

 Female

5 (35.7)

20 (66.7)

  

Age, years, n (%)

  

0.786

0.375

 ≥ 40

9 (64.3)

15 (50.0)

  

 < 40

5 (35.7)

15 (50.0)

  

Tumor location, n (%)

  

2.235

0.135

 Superfical

8 (57.1)

25 (83.3)

  

 Deep

6 (42.9)

5 (16.7)

  

Preoperative tumor volume, cm3, n (%)

  

3.020

0.082

 ≤ 30

4 (28.6)

17 (56.7)

  

 > 30

10 (71.4)

13 (43.3)

  

Tumor range, n (%)

  

2.937

0.087

 Single lobe

5 (35.7)

19 (63.3)

  

 Multiple lobe

9 (64.3)

11 (36.7)

  

EOR, n (%)

  

−4.239a

0.000

 100

0 (0)

22 (73.3)

  

 90–99

11 (78.6)

6 (20.0)

  

 < 90

3 (21.4)

2 (6.7)

  

Treatment after first surgery, n (%)

  

0.172

0.982

 RT alone

3 (21.4)

7 (23.3)

  

 Chemotherapy alone

2 (14.3)

4 (13.4)

  

 RT + chemotherapy

5 (35.7)

12 (40.0)

  

 None

4 (28.6)

7 (23.3)

  
  1. EOR extent of resection, RT radiotherapy; anonparametric test