Table 2.

Multivariate Cox proportional-hazards results for the prognostic value of variables related to the survival of WHO grade III glioma patients (n = 131).

	Hazard ratio	p value	95% confidence interval
Age ≥ 50 years	2.212	0.002	1.341-3.648
ECOG grade ≥ 2	2.179	0.003	1.305-3.638
AO	0.406	0.000	0.250-0.660
Complete resection	0.433	0.014	0.222-0.845
Radiotherapy plus PCV†	0.335	0.000	0.201-0.558

ECOG: Eastern Cooperative Oncology Group

AO: anaplastic oligodendroglioma

PCV: procarbazine, lomustine, and vincristine