Demographics and clinical data of HE patients and healthy controls.

Values are expressed as mean ± SD. HC = healthy control; MHE = minimal hepatic encephalopathy.aThe P value for gender distribution in the two groups was obtained by chi-square test.bThe P value for age and neuropsychological tests difference between the two patients groups was obtained by two sample t test.数据以均值±标准差（mean ± SD）的形式表示。HC为健康对照组（healthy control）；MHE为轻微肝性脑病（minimal hepatic encephalopathy）。a 两组性别分布的P值采用卡方检验（chi-square test）计算得到。b 两组患者的年龄与神经心理学测试差异的P值采用两独立样本t检验（two sample t test）计算得到。