Fig. 3From: Trend in the incidence of hepatitis A in mainland China from 2004 to 2017: a joinpoint regression analysisYearly age-adjusted incidence rates of hepatitis A in mainland China during 2004–2017 based on the joinpoint regression model. *Indicates p < 0.05. The solid dot indicates a joinpoint (turning point demarking significance). The age composition of the Chinese population in 2010 was used as the standard population. AAPC average annual percentage change, APC annual percentage changeBack to article page