Demographics and clinical data of LGG patients and healthy controls.

aThe P value for gender distribution in the two groups was obtained by Fisher’s exact test.bThe P values for age between the LGG groups and HCs were obtained by independent-Samples t test.cThe P values for education between the LGG groups and HCs were obtained by nonparametric test.dThe P values for MoCA scores between the pre-LGG groups and HCs were obtained by independent-Samples t test.eThe P values for MoCA scores between the post-LGG groups and HCs were obtained by independent-Samples t test.fThe P values for MoCA scores between the two LGG groups was obtained by Paired-Samples t test.

a. 两组性别分布的P值通过费希尔精确检验（Fisher’s exact test）计算得到。
b. 低级别胶质瘤组（LGG）与健康对照（HCs）之间年龄的P值通过独立样本t检验（Independent-Samples t test）计算得到。
c. 低级别胶质瘤组（LGG）与健康对照（HCs）之间受教育程度的P值通过非参数检验（nonparametric test）计算得到。
d. 术前低级别胶质瘤组（pre-LGG）与健康对照（HCs）之间蒙特利尔认知评估量表（MoCA）评分的P值通过独立样本t检验（Independent-Samples t test）计算得到。
e. 术后低级别胶质瘤组（post-LGG）与健康对照（HCs）之间蒙特利尔认知评估量表（MoCA）评分的P值通过独立样本t检验（Independent-Samples t test）计算得到。
f. 两组低级别胶质瘤组之间蒙特利尔认知评估量表（MoCA）评分的P值通过配对样本t检验（Paired-Samples t test）计算得到。