Table 2. Progression-free 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		34/48 (70.8)	13.9±2.6	-
Age (years)				0.552
	<57	16/20 (80.0)	9.6±10.4
	≥57	18/28 (64.3)	13.9±1.7
Sex				0.016	1.387	0.673–2.859	0.375
	Male	18/30 (60.0)	28.4±8.7
	Female	16/18 (89.9)	8.8±1.9
Diagnosis type				<0.001	1.569	0.614–4.006	0.346
	Primary	16/28 (57.1)	29.7±10.9
	Secondary	18/20 (90.0)	5.7±0.8
Location				0.080	1.987	0.923–4.278	0.079
	Superficial	22/35 (62.9)	17.9±8.1
	Deep or skull base	12/13 (92.3)	6.2±3.9
Tumor size				0.083
	<4.5 cm	17/19 (89.5)	12.5±3.7
	≥4.5 cm	17/29 (58.6)	26.7±13.4
Peritumoral edema				0.668
	Mild	12/18 (66.7)	14.7±6.3
	Moderate to severe	22/30 (73.3)	13.9±4.7
Tumor shape				0.470
	Round	13/17 (76.5)	13.9±2.2
	Mushroome	21/31 (67.7)	15.4±5.9
Preoperative ECOG				0.278
	0 or 1	15/24 (62.5)	17.3±10.3
	≥2	19/24 (79.2)	13.0±3.3
Extent of resection				<0.001	1.896	0.858–4.191	0.114
	GTR	22/36 (61.1)	26.7±9.6
	STR	12/12 (100)	5.7±0.6
Simpson grade				0.125
	1 or 2	20/31 (64.5)	17.9±9.6
	3 or 4 or 5	14/17 (82.4)	8.8±3.5
Adjuvant radiation				<0.001	0.113	0.034–0.374	<0.001
	No	15/16 (93.7)	4.4±0.7
	Yes	19/32 (59.4)	29.7±4.2

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