Table 6: Chi-square test statistics of distribution of hyperammonemia across different grades of hepatic encephalopathy (HE).

HE GradePatients (%) with hyperammonemia-score

No HE1.7%−6.4
Grade 115.7−3.7
Grade 222.60.2
Grade 334.85
Grade 425.24.1
value, , Phi = 0.68, and