Outcome of Elderly Patients with Meningioma after Image-Guided Stereotactic Radiotherapy: A Study of 100 Cases

Table 2

Univariate and multivariate analysis of PFS rates. In univariate analysis localization, prior surgery and grading showed a significant effect on prognosis (, , and ); however multivariate analysis could not confirm these findings.

	Univariate	Multivariate
	value	HR	95% CI		value
			Lower	Upper
Age (≤71 versus >71 years)	0.24	2.87	0.32	25.43	0.35
Sex (m versus f)	0.36	3.67	0.37	35.90	0.26
Grading (unknown histology and grade I versus grade II/III)	0.0001	9.646	0.383	242.687	0.168
Localization (skull base, falx/parasagittal, and convexity)	0.0001	1.64	0.25	10.59	0.603
Target volume (≤6.4 versus >6.4 ccm)	0.54	3.41	0.38	30.72	0.27
RT regimen (FSRT versus hSRT versus SRS)	0.32	1.40	0.30	6.56	0.67
Prior surgery	0.01	4.49	0.28	71.64	0.29