Table 1.

Study population baseline characteristics

	n = 1173	%
Age, years (mean, SD)	57.4 (15.3)	–––
Sex (n, %)
Male	500	42.6
Female	673	57.4
Non-elective	78	6.6
Elective	1095	93.4
Supratentorial	515	43.9
Infratentorial	658	56.1
Pathology
Meningioma	365	31.1
Glioma	331	28.2
Metastasis	204	17.4
Pituitary adenoma	95	8.1
Neurinoma	58	4.9
Inflammation	42	3.6
Hemangioblastoma	15	1.3
Ependymoma	11	0.9
Sarcoma	10	0.9
Chordoma	1	0.9
Epidermoid tumor	9	0.8
Embryonal tumor	7	0.6
Pineal region tumors	6	0.5

SD, standard deviation