Risk Factors for Primary Hepatocellular Carcinoma in Black and White Americans in 2000  Lei Yu, Dana A. Sloane, Chuanfa Guo, Charles D. Howell  Clinical Gastroenterology and Hepatology  Volume 4, Issue 3, Pages 355-360 (March 2006) DOI: 10.1016/j.cgh.2005.12.022 Copyright © 2006 American Gastroenterological Association Institute Terms and Conditions

Figure 1 Age-specific prevalence of HCC in black and white patients from NIS 2000. HCC patients were identified by ICD-9-CM code 155.0. HCC risk factors were identified with ICD-9-CM codes as described in the the Methods section. ■, Black; □, white. Clinical Gastroenterology and Hepatology 2006 4, 355-360DOI: (10.1016/j.cgh.2005.12.022) Copyright © 2006 American Gastroenterological Association Institute Terms and Conditions

Figure 2 Major HCC risk factors by ages (A) 11–60 and (B) 61 or older. HCC patients and HCC risk factors were identified by ICD-9-CM codes as described in Figure 1 and the Methods section. Letters indicate statistically significant differences between black and white HCC patients. (A) aP < .0001, bP = .03; (B) aP = .0017, bP = .01, cP = .04. ■, Black; □, white. Clinical Gastroenterology and Hepatology 2006 4, 355-360DOI: (10.1016/j.cgh.2005.12.022) Copyright © 2006 American Gastroenterological Association Institute Terms and Conditions