Table 3. Overall survival rates in intracranial anaplastic meningioma.

Variables		No. of progression/no. of patients (%)	Univariate analysis		Multivariate analysis
			Survival (month, mean±SE)	p value (log-rank)	HR	95% CI	p value
Overall		25/48 (52.1)	56.90±16.75
Age				0.881
	<57 yrs	12/20 (60)	50.73±31.31
	≥57 yrs	13/28 (46.4)	56.9±15.59
Sex				0.055	1.377	0.615–3.084	0.437
	Male	12/30 (46.7)	77.70
	Female	13/18 (72.2)	32.93±4.71
Diagnosis type				0.049	0.523	0.125–2.182	0.374
	Primary	13/28 (53.6)	81.27
	Secondary	12/20 (60.0)	36±5.48
Location				0.146	2.214	0.909–5.394	0.080
	Superficial	16/35 (51.4)	61.70±19.23
	Deep or skull base	9/13 (69.2)	18.60±8.91
Tumor size				0.341
	<4.5 cm	12/19 (63.2)	37.53±18.40
	≥4.5 cm	13/29 (51.7)	77.70
Peritumoral edema				0.918
	Mild	10/18 (61.1)	50.73±31.55
	Moderate to severe	15/30 (53.3)	56.90±15.97
Tumor shape				0.602
	Round	10/17 (64.7)	77.70
	Mushroome	15/31 (51.6)	49.90±10.25
Preoperative ECOG				0.267
	0 or 1	10/24 (45.8)	77.70
	≥2	15/24 (66.7)	49.90±13.80
Extent of resection				<0.001	2.296	0.926–5.693	0.073
	GTR	14/36 (44.4)	-
	STR	11/12 (91.7)	28.90±11.29
Simpson grade				0.058
	1 or 2	14/31 (51.6)	81.27
	3 or 4 or 5	11/17 (64.7)	32.93±14.83
Adjuvant radiation				<0.001	0.161	0.036–0.731	0.018
	No	12/16 (75.0)	18.20±10.71
	Yes	13/32 (46.9)	81.27

SE, standard error; HR, hazard ratio; 95% CI, 95% confidence interval; ECOG, Eastern Cooperative Oncology Group; GTR, gross total resection; STR, subtotal resection