. 2021 Feb 21;11(2):271. doi: 10.3390/brainsci11020271

Table 2.

Univariate analysis of quantitative variables of the whole tumor region and histopathological groups.

Variable	AP	Descriptive Statistics				Kruskal–Wallis Test					Post hoc Dunn Test		Wilcoxon Rank Sum Test
Variable	AP	n	Median	IQR	95% CI	χ ²	df	p	ε ²	95% IC	Comparison	p (Holm)	Z	p	r
MTE						13.96	2	<0.001	0.36	0.10–0.64
	High-grade glioma	21	84.62	28.06	71.11–92.29						HGG-LGG	0.541
	Low-grade glioma	9	84.22	10.12	81.28–105.40						HGG-MENINGIOMA	<0.001	3.59	<0.001	0.65
	Meningioma	10	119.90	27.08	108.76–139.49						LGG-MENINGIOMA	0.021	2.69	0.006	0.62
FA						16.10	2	<0.001	0.41	0.18–0.66
	High-grade glioma	21	0.18	0.08	0.15–0.21						HGG-LGG	0.549
	Low-grade glioma	9	0.20	0.04	0.17–0.23						HGG-MENINGIOMA	<0.001	3.85	<0.001	0.69
	Meningioma	10	0.30	0.10	0.27–0.39						LGG-MENINGIOMA	0.011	2.94	0.002	0.67
MD						13.85	2	<0.001	0.36	0.15–0.60
	High-grade glioma	21	1.32	0.61	1.11–1.60						HGG LGG	0.607
	Low-grade glioma	9	1.36	0.10	1.26–1.40						HGG-MENINGIOMA	0.002	3.29	0.001	0.59
	Meningioma	10	0.82	0.14	0.71–1.03						LGG-MENINGIOMA	0.002	3.27	<0.001	0.75
AD						9.64	2	0.008	0.25	0.07–0.52
	High-grade glioma	21	1.60	0.58	1.26–1.76						HGG-LGG	0.419
	Low-grade glioma	9	1.64	0.11	1.55–1.78						HGG-MENINGIOMA	0.019	2.58	0.009	0.46
	Meningioma	10	1.09	0.22	0.92–1.30						LGG-MENINGIOMA	0.012	2.86	0.003	0.66
RD						15.27	2	<0.001	0.39	0.19–0.60
	High-grade glioma	21	1.15	0.58	1.01–1.47						HGG-LGG	0.602
	Low-grade glioma	9	1.17	0.12	1.11–1.28						HGG-MENINGIOMA	0.001	3.47	<0.001	0.62
	Meningioma	10	0.69	0.18	0.57–0.87						LGG-MENINGIOMA	0.001	3.43	<0.001	0.79
Ki-67						22.04	2	<0.001	0.57	0.39–0.73
	High-grade glioma	21	35	10	30–38						HGG-LGG	0.001	3.29	<0.001	0.60
	Low-grade glioma	9	10	17	2–30						HGG-MENIN	<0.001	4.21	<0.001	0.76
	Meningioma	10	8	7.5	4–15.5						LGG-MENIN	0.609

IQR = interquartile range, df = degrees of freedom, LGG = low-grade glioma, HGG = high-grade glioma, MTE = mean tissue elasticity, FA = fractional anisotropy, MD = mean diffusivity, AD = axial diffusivity, and RD = radial diffusivity.