Study of liver cirrhosis over twenty consecutive years in adults in Southern China

Figure 2 Trend in the mean age of the study population in 2001-2020. The three-year moving averages in ages were calculated and shown. The mean age of cirrhotic patients increased continuously over the 20-year study period, with a high coefficient of determination in linear regression (R² = 0.764). The three-year moving averages were plotted on the central year, as the year of diagnosis in the horizontal axis (e.g. 2002 represented 2001-2003, and 2019 represented 2018-2020).