Low levels of Human Cytomegalovirus Infection in Glioblastoma multiforme associates with patient survival; -a case-control study

Table 2 Odds Ratio Estimates for patients surviving > 18 months in patients with low-grade versus high grade-HCMV infection in their tumors and prognostic factors important for GBM patients survival (Age, Extent of Resection, RPA Subclass and gamma knife treatment) by Multiple Logistic regression analysis.

Characteristic	HCMV-IEA					HCMV-LA
	95% LCL	Odds ratio	95% UCL	P value	95% LCL	Odds ratio	95% UCL	P value
HCMV infection: Non to Low-grade vs. moderate to high-grade	1.359	6.604	32.094	.019*	0.425	1.264	3.758	.67
Age group: <50 vs ≧ 50 y	0.080	0.338	1.428	.142	0.081	0.339	1.412	.137
Gender Female vs Male	0.317	0.965	2.938	.95	0.335	0.962	2.763	94
Extent of surgery: Radical vs partial	0.404	2.489	15.348	.326	0.342	1.723	8.691	.50
RPA: III and IV vsV and VI	2.148	8.161	30.997	.002*	2.615	9.504	34.545	.0006*
Gammaknife vs. no Gammaknife treatment	0.326	1.339	5.505	.068	1.41	1.409	5.475	.62

*: considered significant, LCL (lower confidence interval), UCL (upper confidence interval)