. 2016 Dec;37(12):2209–2216. doi: 10.3174/ajnr.A4907

Table 4:

P values of comparisons for the sum of scores for the MR imaging features and ASL parameters among the 3 pathologic grades

WHO Grade	Sum of Scores	nCBF-sTI	nCBF-mTI	nBAT
II vs III	.139	.098	.021^a	.005^a
II vs IV	.015^a	.006^a	<.001^a	.078
III vs IV	1	.905	.023^a	1
LGGs vs HGGs	.006^a	.003^a	<.001^a	.002^a

Significant at 95% (for intergroup comparisons among the WHO II, III, and IV grades. P values have been multiplied by 3 for Bonferroni correction).