Baseline characteristics of study subjects according to filtered coffee consumption.

P values of characteristics between categories of filtered coffee consumption were calculated by analysis of chi-square test or Fisher's exact test and Kruskal-Wallis test.
SD, standard deviation; ALT, alanine aminotransferase; BMI, body mass index
* 182 patients among the normal ALT group and 107 patients among the higher ALT group were analyzed; the duration of HCV infection could not be calculated in 87 patients due to lack of information.