Demographics and clinical data of cirrhotic patients and healthy controls.

<p>Values are expressed as mean ±SD. MHE = minimal hepatic encephalopathy; DST = digital symbol test; NCT-A = number connection test-A; Non-HE = non-hepatic encephalopathy.</p>a<p>The <i>P</i> value for gender distribution in the three groups was obtained by chi-square test.</p>b<p>The <i>P</i> value for age distribution in the three groups was obtained by one-way analysis of variance test.</p>c<p>The <i>P</i> value for difference of the neuropsychological test scores among the three groups was obtained by one-way analysis of variance test.</p>d<p>The <i>P</i> value for difference of venous blood ammonia between the two groups was obtained by two-sample <i>t</i> test.