Table 3.

Significant correlations between different parameters of Tumor voxels

Parameter	Statistic index	Pcho	Glu	Gln	Gly	Gln/Glu	Lac	Lac/Cr	Pcho/Crea	NAA	Pcho/NAA	Lac/NAA	NAAG	Tau
Cr	r a	0.755	0.732	0.589	0.729	NS	NS	NS	−0.451	0.714	−0.26	−0.368	0.563	0.261
	Pb	<0.001	<0.001	<0.001	<0.001				<0.001	<0.001	0.019	0.001	<0.001	0.031
Pcho	r	1	−0.264	NS	0.799	0.384	−0.314	−0.444	NS	0.341	NS	−0.271	NS	NS
	P		0.031		<0.001	0.002	0.007	<0.001		0.002		0.030
Glu	r	-	1	0.668	0.405	NS	0.403	0.402	−0.344	0.234	NS	NS	0.712	NS
	P			<0.001	<0.001		<0.001	0.001	0.006	0.045			<0.001
Gln	r	-	-	1	0.393	0.337	0.628	0.294	NS	NS	NS	0.258	0.230	NS
	P				<0.001	<0.001	<0.001	0.008				0.025	0.015
Gly	r	-	-	-	1	0.312	NS	NS	NS	0.440	NS	NS	0.222	0.728
	P					0.009				<0.001			0.036	<0.001
Gln/Glu	r	-	-	-	-	1	0.368	NS	NS	NS	NS	NS	NS	NS
	P						0.001
Lac	r	-	-	-	-	-	1	0.702	NS	NS	NS	0.307	0.269	0.429
	P							<0.001				0.004	0.005	<0.001
Lac/Cr	r	-	-	-	-	-	-	1	NS	NS	NS	0.265	0.235	0.515
	P											0.025	0.034	<0.001
Pcho/Crea	r	-	-	-	-	-	-	-	1	−0.524	0.451	0.389	−0.309	NS
	P									<0.001	<0.001	0.002	0.005
NAA	r	-	-	-	-	-	-	-	-	1	−0.539	−0.426	0.375	0.304
	P										<0.001	<0.001	<0.001	0.021
Pcho/NAA	r	-	-	-	-	-	-	-	-	-	1	0.607	NS	NS
	P											<0.001
Lac/NAA	r	-	-	-	-	-	-	-	-	-	-	1	NS	NS
	P
NAAG	r	-	-	-	-	-	-	-	-	-	-	-	1	0.303
	P													0.009

NS: Non significant;

^a)r coefficient;

^b)p-value.