Demographic data and symptoms of patients.

Statistical analysis of the data: Each sub-group with diagnosis was tested vs. the sub-group without diagnosis for all quantitative variables and categories of a qualitative variable. Statistically significant differences are indicated by footnotes; all other differences were not significant.Abbreviations: Q25, lower quartile, 25% of the data lie below this value; Q75, upper quartile, 75% of the data lie below this value.a18 patients were positive for anti-HAV IgM and HAV RNA; 7 patients were positive for anti-HAV IgM; 1 patient was positive for HAV RNA. Co-infections: 1 patient was positive for HBV DNA and HBsAg.b19 patients were positive for anti-HBc IgM, HBV DNA, and HBsAg; 2 patients were positive for anti-HBc IgM and positive for HBV DNA in two different PCR assays, but negative for HBsAg. Co-infections: 1 patient was HCV RNA positive.cAll patients were positive for HBV DNA and HBsAg, but negative for anti-HBc IgM. Co-infections: 1 patient was anti-HAV IgM positive; 1 patient was HCV RNA positive.dAll patients were HCV RNA positive. Co-infections: 1 patient was positive for anti-HBc IgM, HBV DNA, and HBsAg; 1 patient was positive for HBV DNA and HBsAg.ep = 0.001, no diagnosis vs. acute hepatitis A; p = 0.0001, no diagnosis vs. chronic hepatitis B; p = 0.00004, no diagnosis vs. acute & chronic hepatitis B combined; p = 0.005, no diagnosis vs. hepatitis C.fpgphp = 0.0005, no diagnosis vs. acute hepatitis A; p = 0.0003, no diagnosis vs. acute hepatitis B.