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Table 2 Relative changes in the yearly incidence rates of hepatitis A before/after the EPI in different age groups in mainland China from 2004 to 2017 based on joinpoint regression analysis

From: Trend in the incidence of hepatitis A in mainland China from 2004 to 2017: a joinpoint regression analysis

Age group(year)

Duration

APC and 95%CI (%)

p-value

AAPC and 95%CI (%)

p-value

0–14

2004–2007

4.4 (− 9.9–21.0)

0.525

 − 15.3 (− 18.7– − 11.7)*

 < 0.001

 

2007–2017

 − 20.4 (− 23.8– − 16.8)*

 < 0.001

  

15–64

2004–2012

 − 15.5 (− 17.5– − 13.5)*

 < 0.001

 − 11.5 (− 13.9– − 9.0)*

 < 0.001

 

2012–2017

 − 4.5 (− 11.4–2.9)

0.194

  

 ≥ 65

2004–2010

 − 11.1 (− 14.6– − 7.5)*

 < 0.001

 − 6.6 (− 8.7– − 4.4)*

 < 0.001

 

2010–2017

 − 2.5 (− 6.0–1.1)

0.152

  
  1. In 2008, the hepatitis A vaccine was included in the national Expanded Programme on Immunization. *Indicates p < 0.05