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Trends in the incidence of 15 common cancers in Hong Kong, 1983-2008.

BACKGROUND
The objective of this study WAS to describe cancer incidence rates and trends among THE Hong Kong population for the period 1983-2008.


METHODS
Incident cases and population data from 1983 to 2008 were obtained from the Hong Kong Cancer Registry and the Census and Statistics Department, respectively. Age- standardized incidence rates (ASIR) were estimated and joinpoint regression was applied to detect significant changes in cancer morbidity.


RESULTS
For all cancers combined, the ASIR showed declining trends (1.37% in men, 0.94% in women), this also being the case for cancers of lung, liver, nasopharynx, stomach, bladder, oesophagus for both genders and cervix cancer for women. With cancer of thyroid, prostate, male colorectal, corpus uteri, ovary and female breast cancer an increase was evident throughout the period. The incidence for leukemia showed a stable trend since early 1990 s, following an earlier decrease.


CONCLUSIONS
Although overall cancer incidence rates and certain cancers showed declining trends, incidence trends for colorectal, thyroid and sex-related cancers continue to rise. These trends in cancer morbidity can be used as an important resource to plan and develop effective programs aimed at the control and prevention of the spread of cancer amongst the Hong Kong population. It is particularly useful in allowing projection of future burdens on the society with the increase in certain cancer incidences.