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Stomach Cancer

Stomach Cancer

12 January 2024

Introduction

Stomach cancer was the sixth commonest cancer in Hong Kong in 2021. It accounted for 3.4% of all new cancer cases.

Incidence

There were 1306 new cases of stomach cancer in 2021, with 762 male cases and 544 female cases. The male to female ratio of incidence was about 1.4 to 1. The crude incidence rates of stomach cancer were 22.5 for males and 13.5 for females per 100 000 population of respective sex. The age-standardised incidence rates* of stomach cancer were 10.4 for males and 6.4 for females per 100 000 standard population. 

Trend of incidence

The age-standardised incidence rate of stomach cancer of both sexes and that of males had a downward trend over the past 39 years (average annual percentage change (AAPC)# between 1983 and 2021: -2.2% and -2.5% respectively) and over the past 10 years (AAPC between 2012 and 2021: -1.1% and -1.4% respectively).

Number of new cases and crude incidence rate of stomach cancer by sex, 1983-2000 (View)

Number of new cases and crude incidence rate of stomach cancer by sex, 2001-2021 (View)

Age-standardised incidence rate of stomach cancer by sex, 1983-2021

Age-standardised incidence rate of stomach cancer by sex, 1983-2021

Notes:

*

Age-standardised incidence rates are compiled based on the world standard population specified in GPE Discussion Paper Series: No.31, EIP/GPE/EBD, World Health Organization, 2001.

#

AAPC of age-standardised incidence / death rates is a summary measure of the trends in the age-standardised incidence / death rates over a specified interval estimated from joinpoint regression.
   

Data in the above charts from 1996 onwards are compiled based on the population estimates under the "resident population" approach instead of the "extended de facto" approach.

    Classification of diseases and causes of death is based on the International Statistical Classification of Diseases and Related Health Problems (ICD) 10th Revision from 2001 onwards. Figures from 2001 onwards may not be comparable with figures for previous years which were compiled based on the ICD 9th Revision.

Sources:

 

Census and Statistics Department
Department of Health
Hong Kong Cancer Registry, Hospital Authority

Mortality

Stomach cancer was the sixth leading cause of cancer deaths in Hong Kong. In 2022, it claimed 634 deaths, accounting for 4.3% of all cancer deaths. The crude death rates of stomach cancer were 11.3 for male and 6.4 for female per 100 000 population of respective sex. The age-standardised death rates* of stomach cancer were 4.6 for males and 2.7 for females per 100 000 standard population. 

Trend of mortality

The age-standardised death rates of stomach cancer of both sexes, males and females all had a downward trend over the past 42 years (average annual percentage change (AAPC)# between 1981 and 2022: -2.6%, -2.7% and -2.6% respectively) and over the past 10 years (AAPC between 2013 and 2022: -3.4%, -3.7% and -2.6% respectively).

Number of registered deaths and crude death rate of stomach cancer by sex, 1981-2000 (View)

Number of registered deaths and crude death rate of stomach cancer by sex, 2001-2022 (View)

Age-standardised death rate of stomach cancer by sex, 1981-2022

Age-standardised death rate of stomach cancer by sex, 1981-2022

Notes:

*

Age-standardised death rates are compiled based on the world standard population specified in GPE Discussion Paper Series: No.31, EIP/GPE/EBD, World Health Organization, 2001.

#

AAPC of age-standardised incidence / death rates is a summary measure of the trends in the age-standardised incidence / death rates over a specified interval estimated from joinpoint regression.

   

Data in the above charts from 1996 onwards are compiled based on the population estimates under the "resident population" approach instead of the "extended de facto" approach.

    Classification of diseases and causes of death is based on the International Statistical Classification of Diseases and Related Health Problems (ICD) 10th Revision from 2001 onwards. Figures from 2001 onwards may not be comparable with figures for previous years which were compiled based on the ICD 9th Revision.

Sources:

 

Census and Statistics Department
Department of Health

Stomach cancer corresponds to codes 151 in ICD-9 and C16 in ICD-10.

For more information about cancer statistics in Hong Kong, please visit the website of the Hong Kong Cancer Registry.

For health information relating to cancer, please visit the Cancer Online Resource Hub.