Characteristics of individual studies for association between CYP2E1 Dra I polymorphisms and ALD risks.

Abbreviations: ALD, alcoholic liver disease; AC, alcoholic cirrhosis; AH, alcoholic hepatisis; AFL, alcoholic fatty liver; AF, alcoholic fibrosis; HCC, hepatic carcinoma.athe study by Parsian did not provide the number of each genotypes, instead they provided the number of alleles of case and controls;bthe mean age and/or the range of age of each groups;ccases and controls combined;dp for Hardy–Weinberg equilibrium test in controls (Healthy person);“na“, means that the data were not available.