Stomach Cancer
22 February 2023
Introduction
Stomach cancer was the sixth commonest cancer in Hong Kong in 2020. It accounted for 3.5% of all new cancer cases.
Incidence
There were 1197 new cases of stomach cancer in 2020, with 715 cases of males and 482 cases of females. The male to female ratio was about 1.5 to 1. The crude incidence rates were 20.9 for males and 11.9 for females per 100 000 population of respective sex. The age-standardised incidence rates* were 10.1 for males and 6.1 for females per 100 000 standard population.
Trend of incidence
The age-standardised incidence rate of both sexes and that of males had a downward trend over the past 38 years (average annual percentage change (AAPC)# between 1983 and 2020: -2.3% and -2.5% respectively) and over the past 10 years (AAPC between 2011 and 2020: -1.1% and -1.6% 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, 2001-2020 （View）
Age-standardised incidence rate of stomach cancer by sex, 1983-2020
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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. |
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# |
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. | |
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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. Also, the 2021 Population Census conducted from June to August 2021 provides a benchmark for revising the population figures complied since 2016 Population By-census. Population-related figures from 2017 to 2020 have been revised accordingly. |
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| 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. | ||
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Sources: |
Census and Statistics Department |
Mortality
Stomach cancer was the sixth leading cause of cancer deaths in Hong Kong. In 2021, it claimed 631 deaths, accounting for 4.2% of all cancer deaths. The crude death rates were 11.2 for male and 6.2 for female per 100 000 population of respective sex. The age-standardised death rates* of stomach cancer were 4.9 for males and 2.6 for females per 100 000 standard population.
Trend of mortality
The age-standardised death rates of both sexes, males and females all had a downward trend over the past 41 years (average annual percentage change (AAPC)# between 1981 and 2021: -2.6% for both sexes, males and females) and over the past 10 years (AAPC between 2012 and 2021: -3.4%, - 3.6% 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, 2001-2021 （View）
Age-standardised death rate of stomach cancer by sex, 1981-2021
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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. Also, the 2021 Population Census conducted from June to August 2021 provides a benchmark for revising the population figures complied since 2016 Population By-census. Population-related figures from 2017 to 2020 have been revised accordingly. |
||
| 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 |
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.