Factors associated with spontaneous viral clearance in acute hepatitis C patients (n = 117).

1Median ALT was 684 IU/L; median bilirubin was 7.2 mg/dl (two missing values for bilirubin).2Medical procedures included surgery, blood transfusion, hemodialysis, biopsy, endoscopy, Caesarean section, episiotomy, uterine curettage, injection, infusion, catheter, sclerotherapy of varicose veins. Low risk exposures included acupuncture, shaving at barber, tattooing, pedicure, manicure, and circumcision.