Patients: VA system (implies adult)
Criteria for a diagnosis of NAFLD:
(1) >= 2 elevated serum ALT values
(2) ambulatory setting
(3) elevated serum ALT values taken > 6 months and <= 2 years of each other
(4) exlusion of other causes
Exclusions specified in paper:
(1) metastatic cancer
(2) serologic evidence of HBV
(3) serologic evidence of HCV
(4) alcohol abuse (no positive AUDIT-C score within 1 year an elevated ALT)
Other causes of hepatitis also need to be excluded (not mentioned in paper):
(1) anabolic steroids
(2) medications
(3) autoimmune hepatitis
(4) primary biliary cirrhosis
(5) other causes of liver disease (hemochromatosis, etc)
