Table 3. Univariate analysis of overall survival in patients treated with RT and temozolomide.

Variable	Hazard Ratio (95% CI)	p-value
RSI RR vs. RS	1.34 (0.91,1.98)	0.14
MGMT Expression High vs. Low	1.7 (1.23,2.35)	0.002
Age 50+ vs. 50	1.76 (1.2,2.59)	0.004
ECOG 24 vs. 01	1.73 (1.14,2.64)	0.01
ECOG Unknown vs. 01	1.23 (0.73,2.07)	0.43
Gender Male vs. Female	1.07 (0.76,1.51)	0.71
Race Black vs. Asian/White	1.01 (0.45,2.29)	0.98
Race Unknown vs. Asian White	1.53 (0.48,4.82)	0.47

CI = Confidence Interval

RT = Radiotherapy

RSI = Radiosensitivity index

RS = Radiosensitive

RR = Radioresistant

MGMT = O(6)-Methylguanine-DNA methyltransferase

ECOG = Eastern Cooperative Oncology Group Performance Status