[Retracted] Correlations between Clinical Characteristics and Prognosis in Patients with Grade II Glioma

Table 1

Univariate analysis of prognosis of the patients with grade II glioma.

Factors		Cases	5-Year overall survival (%)	X^2
Gender	Male	33	57.6	5.018	0.025
	Female	27	85.0
Age	<40	30	90.0	10.844	0.001
	≥40	30	50.0
Preoperative KPS scores	<60	15	80.0	3.143	0.208
	60–80	24	75.0
	>80	21	57.1
LTD	≥5 cm	24	75.0	0.505	0.477
	<5 cm	36	66.7
Pathological type	Astrocytoma	39	59.0	6.586	0.037
	Oligodendroglioma	13	84.6
	Mixed of these two types	8	100.00
SVZ expansion	Yes	14	95.0	84.106	≤0.001
	No	46	0.00
Peritumoral edema	Yes	10	84.0	37.069	≤0.001
	No	50	0.00
Multiple lesions	Yes	58	100.00	0.737	0.391
	No	2	69.0
Surgical resections	Total resection	37	86.5	13.455	≤0.001
	Partial resection	23	43.5
Residual tumor volume	≥3 mL	20	75.0	0.206	0.650
	<3 mL	40	67.5
Radiotherapy	Yes	48	68.7	0.213	0.644
	No	12	75.0
Duration between surgery to radiotherapy	>30 d	28	75.0	0.263	0.608
	≤30 d	20	65.6
Irradiation dosage	45–54 Gy	23	78.3	1.936	0.164
	>54 Gy	25	60.0
Chemotherapy	Yes	14	64.3	1.182	0.670
	No	46	71.7
Tumor recurrence	Yes	26	42.3	18.037	≤0.001
	No	34	91.2

KPS, Karnofsky performance scale; SVZ, subventricular zone.