“… CCS Clinical Classification Code*Odds ratios are adjusted for age, sex, and advanced liver disease status‡ Comorbidities associated with HCV treatment: (A) conditions associated with inteferon alfa or ribavirin use and (B) concurrent disease for which therapy is contraindicated; and HCV disease: (C) symptoms of HCV disease, (D) extrahepatic manifestations associated with HCV infection, and (E) conditions associated with disease progression; Unk, unknown a Of the patients who had other liver diseases, they reported abnormal liver function (69.5%), elevated transaminase/lactate dehydrogenase (26.7%), abnormal serum enzyme levels (13.8%), ascites (10.7%), and hepatomegaly (9.0%) b Of the patients who had other connective tissue disease, they mainly reported pain in limb (38.7%), myalgia and myositis unspecified (18.8%), swelling of limb (12.5%), and spasm of muscle (9.7%) c Of the patients who had other and unspecified lower respiratory disease, they mainly reported coughs (48.5%), other respiratory abnormalities (35.6%), shortness of breath (34.1%), and other lung disease e Of the patients who had other non-traumatic joint disorders, they mainly reported joint pain in the leg (25.5%), shoulder (24.1%), ankle (15.9%), and pelvis (14.4%) f Of the patients who had other skin disorders, they mainly reported other nonspecified skin eruptions (22.3%), sebaceous cyst (14.3%), actinic keratosis (12.3%), and other seborrheic keratosis (10.8%) g Of the patients who had other unspecified gastrointestinal disorders, they mainly reported diarrhea (26.7%), splenomegaly (20.3%), irritable bowel syndrome (11.9%), and unspecified site of abdominal/pelvic swelling (10.6%) h Of the patients who had other unspecified benign neoplasm, they mainly reported benign neoplasm of the large bowel (39.2%), skin trunk (14.3%), and unspecified skin (11.5%) i Of the patients who had esophageal disorders, they mainly reported esophageal reflux (62.6%), reflux esophagitis (21.1%), esophagitis unsepcified (14.5%), and esophageal varices without bleeding (13.7%) j Of the patients who had other upper respiratory disease, they mainly reported unspecified allergic rhinitis (43.0%), rhinitis due to pollen (13.6%), chronic rhinitis (12.4%), nasal cavity/other sinus disorder (12.2%), epistaxis (11.1%), and deviated nasal septum (11.0%) k Of the patients who had allergic reactions, they mainly reported unspecified dermatitis (65.9%) and other atopic dermatitis (11.1%) l Of the patients who had genitourinary symptoms and ill-defined conditions, they mainly reported hematuria (32.0%), urinary frequency (20.1%), and dysuria (18.9%) m Of the patients who had other viral infections, they mainly reported unspecified viral infections (42.8%), unspecified viral warts (22.0%), and unspecified herpes simplex (11.4%) n Of the patients who had other eye disorders, they mainly reported unspecified tear film insufficiency (19.7%), other vitreous opacities (15.9%), and vitreous degeneration (9.5%) o Chronic obstructive pulmonary disease (COPD) may be misclassified under lower respiratory disease which is a antiviral treatment contraindication [14] p Upper respiratory disease, comprising mainly of rhinitis, may reflect an under-diagnosis of thyorid disorders, which is known to be associated with HCV [15]. …”