Background & Aims Concurrent to development of more effective drugs for treatment of hepatitis C virus (HCV), infection, there has been an increase in the incidence of non-alcoholic fatty liver disease (NAFLD). Data indicate that liver transplantation prolongs survival times of patient with acute hepatitis associated with alcoholic liver disease (ALD). We compared data on disease prevalence in the population with data from liver transplantation waitlists to evaluate changes in the burden of liver disease in the United States. Methods We collected data on the prevalence of HCV from the National Health and Nutrition Examination Survey (NHANES), from the 2010 and 2013–2014 cycles. We also collected data from the HealthCore Integrated Research Database on patients with cirrhosis and chronic liver failure (CLF) from 2006 through 2014, and data on patients who received transplant from the United Network for Organ Sharing (UNOS), from 2003 through 2015. We determined percentages of new waitlist members and transplant recipients with HCV infection, stratified by indication for transplant, modeling each calendar year as a continuous variable using the Spearman rank correlation, non-parametric test of trends, and linear regression models. Results In an analysis of data from the NHANES (2013–2014), we found that the proportion of patients with a positive HCV antibody who had a positive HCV RNA was 0.5 (95% CI, 0.42–0.55); this value was significantly lower than in 2010 (0.64; 95% CI, 0.59–0.73) (P=.03). Data from the HealthCore databased revealed significant changes (P<.05 for all), over time, in percentages of patients with compensated cirrhosis (decreases in percentages of patients with cirrhosis from HCV or ALD, but increase in percentages of patients with cirrhosis from non-alcoholic steatohepatitis [NASH]), CLF (decreases in percentages of patients with CLF from HCV or ALD, with an almost 3-fold increase in percentage of patients with CLF from NASH), and hepatocellular carcinoma (HCC) (decreases in percentages of patients with HCC from HCV or ALD and a small increase in HCC among persons with NASH). Data from the UNOS revealed that among patients new to the liver transplant waitlist, or undergoing liver transplantation, for CLF, there was a significant decrease in the percentage with HCV infection and increases in percentages of patients with NAFLD or ALD. Among patients new to the liver transplant waitlist, or undergoing liver transplantation, for HCC, proportions of those with HCV infection, NAFLD, or ALD did not change between 2003 and 2015 Conclusions In an analysis of 3 different databases (NHANES, HealthCore, and UNOS), we found the proportion of patients on the liver transplant waitlist or undergoing liver transplantation for chronic HCV infection to be decreasing, and fewer patients to have cirrhosis or CLF. However, the percentages of patients on the waitlist or receiving liver transplants for NASH or ALD are increasing, despite different relative burdens of disease among the entire population of patie...

The rise in incidence of hepatocellular carcinoma (HCC) in the United States has been well documented. The purpose of this analysis was to examine temporal trends in HCC incidence, mortality, and survival within the U.S. population. The Surveillance, Epidemiology, and End Results data were used to examine incidence and incidence-based (IB) mortality in HCC from 1973 to 2011. Secular trends in age-adjusted incidence and IB mortality by sex and cancer stage were characterized using the Joinpoint Regression program. In 1973, HCC incidence was 1.51 cases per 100,000, whereas in 2011, HCC incidence was 6.20 cases per 100,000. Although HCC incidence continues to increase, a slowing of the rate of increase occurs around 2006. In a sensitivity analysis, there was no significant increase in incidence and IB mortality from 2009 to 2011. There was a significant increase in overall median survival from the 1970s to 2000s (2 vs. 8 months; P < 0.001). On multivariable Cox's regression analysis, age, sex, race, tumor grade, stage at diagnosis, lymph/vascular invasion, number of primary tumors, tumor size, and liver transplant were independently associated with mortality. Conclusion Our results indicate a deceleration in the incidence of HCC around 2006. Since 2009 and for the first time in four decades, there is no increase in IB mortality and incidence rates for HCC in the U.S. population. The nonsignificant increase in incidence and IB mortality in recent years suggest that the peak of the HCC epidemic may be near. A significant survival improvement in HCC was also noted from 1973 to 2010, which seems to be driven by earlier detection of HCC at a curative stage and greater utilization of curative modalities (especially transplant).

No abstract

Background & Aims Data on the incidence and natural history of diverticulitis are largely hospital-based and exclude the majority of diverticulitis patients, who are treated in an outpatient setting for uncomplicated diverticulitis. We assessed temporal trends in the epidemiology of diverticulitis in the general population. Methods Through the Rochester Epidemiology Project we reviewed the records of all individuals with a diagnosis of diverticulitis from 1980–2007 in Olmsted County, Minnesota. Results In 1980–1989 the incidence of diverticulitis was 115/100,000 person-years, which increased to 188/100,000 in 2000–2007 (P<.001). Incidence increased with age (P<.001); however, the temporal increase was greater in younger people (P<.001). Ten years after the index and second diverticulitis episodes, 22% and 55% had a recurrence, respectively. This recurrence rate was greater in younger people (hazard ratio [HR] per decade 0.63; 95% confidence interval [CI], 0.59–0.66) and women (HR 0.68; 95% CI, 0.58–0.80). Complications were seen in 12%; this rate did not change over time. Recurrent diverticulitis was associated with a decreased risk of complications (P<.001). Age was associated with increased risk of local (odds ratio [OR] 1.27 per decade; 95% CI, 1.04–1.57) and systemic (OR 1.83; 95% CI, 1.20–2.80) complications. Survival after diverticulitis was lower in older people (P<.001) and men (P<.001) and worsened over time (P<.001). The incidence of surgery for diverticulitis did not change from 1980–2007. Conclusions The incidence of diverticulitis has increased by 50% in 2000–2007 compared to 1990–1999, and more so in younger people. Complications are relatively uncommon. Recurrent diverticulitis is frequent but typically uncomplicated. Younger people with diverticulitis had less severe disease, more recurrence, and better survival.

No abstract

No abstract

dataset found a relatively high seroprevalence (21%) of hepatitis E virus (HEV) infection in the U.S. general population. Using data obtained within the NHANES 2009-2010 survey, where a high performance assay for HEV was used, we estimated the weighted seroprevalence of HEV infection among U.S. individuals 6 years and older. We also evaluated factors associated with HEV seropositivity. A total of 8,814 individuals were included in the analysis. The median age of study participants was 37 years (interquartile range [IQR] 17-58 years), with 51.2% being female. The weighted national seroprevalence of HEV was 6% (95% confidence interval [CI] 5.1%-6.9%). About 0.5% of those with HEV had evidence of recent exposure (immunoglobulin M-positive). In the univariate analyses, factors associated with HEV seropositivity were increasing age (P-trend < 0.001), birth outside of the U.S., Hispanic race, and "meat" consumption (>10 times/month). No significant association was observed with low socioeconomic status, water source, or level of education. In the multivariate analysis, only older age remained predictive of HEV seropositivity. Conclusion: The weighted national seroprevalence of HEV in the U.S. is much less than previously reported. Using data obtained with a high performance assay, the seroprevalence of HEV was estimated at 6.0% in the U.S. Based on these results, the seroprevalence of HEV is only one-third as high as previously reported. (HEPATOLOGY 2014;60:815-822) H epatitis E virus (HEV) is the most common cause of acute viral hepatitis and jaundice worldwide. 1,2 It is a major public health problem in developing countries, where sporadic infections and epidemics of HEV occur periodically. [3][4][5][6] The prevalence of antibodies to HEV (anti-HEV) among adults in developing countries ranges from 30% to 80%. Infection is mainly transmitted by way of a fecal-oral route, usually through contaminated drinking water or food. HEV infection typically causes an acute, self-limited hepatitis. HEV infection can, however, be particularly severe in infants under 2 years of age, people with preexisting chronic liver disease, and is associated with 10% to 25% mortality in pregnant women. 5,[7][8][9] HEV infection is increasingly recognized in the developed world, where it was previously thought to be uncommon. Cases were often attributed to travel in the tropics and subtropics. 10 Recent studies indicate that most cases of HEV in the developed world are, in fact, locally acquired (autochthonous), 1,11-16 possibly related to zoonotic transmission. The reported prevalence of anti-HEV in low-incidence countries varies widely, ranging from <1% to >20%.

The overall prevalence of CD increased between 1988 and 2012 and is significantly more common in whites. In addition, a higher proportion of individuals maintaining a gluten-free diet in the absence of a diagnosis of CD are blacks.