Forest plots of ln(OR) with 95% CI for the allelic analysis. Black squares indicate the ln(OR) (ln(OR) can be better fitted than OR), with the size of the square inversely proportional to its variance, and horizontal lines represent the 95% CIs. The pooled results are indicated by the unshaded black diamond. Three studies, including Chen 1997 (Atayal), Chen 1997 (Ami), and Chen 1997 (Paiwan), are not shown on the forest plots because the scale of the wide CIs can not fit into the current version of the plot. *, alcoholic patients without alcoholic liver disease, cirrhosis or pancreatitis.
