TABLE 2.

Comparisons of ALPS index among meningiomas without PTBE, meningiomas with PTBE and normal subjects.

Index	Right-side meningioma		Normal subject (n = 44)	PTBE− vs. PTBE+		PTBE− vs. normal subject		PTBE+ vs. normal subject
	PTBE− (n = 13)	PTBE+ (n = 31)		P-value	95% CI	P-value	95% CI	P-value	95% CI
Right ALPS	1.502 ± 0.089	1.260 ± 0.112	1.215 ± 0.093	<0.001	0.140, 0.304	<0.001	0.204, 0.357	0.060	−0.002, 0.118
Left ALPS	1.353 ± 0.213	1.263 ± 0.173	1.273 ± 0.105	0.615	−0.057, 0.183	0.158	−0.022, 0.203	1.000	−0.060, 0.115
	Left-side meningioma		Normal subject (n = 44)
	PTBE- (n = 11)	PTBE+ (n = 25)
Right ALPS	1.272 ± 0.167	1.198 ± 0.204	1.215 ± 0.093	1.000	−0.079, 0.175	1.000	−0.075, 0.158	1.000	−0.095, 0.082
Left ALPS	1.513 ± 0.198	1.304 ± 0.178	1.273 ± 0.105	0.002	0.060, 0.317	<.001	0.110, 0.347	0.840	−0.050, 0.130

Data are mean ± SD; CI, confidence interval; PTBE−, meningiomas without peritumoral brain edema; PTBE+, meningiomas with peritumoral brain edema.