J Agric Med Community Health.  2015 Sep;40(3):115-125. 10.5393/JAMCH.2015.40.3.115.

Trends in Colorectal Cancer Incidence in Daejeon and Chungcheongnam-do, South Korea (2000-2012)

• Kim SY
• Kweon IS
• Kim JA
• Lee TY
• Nam HS

• KMID: 2177967
• DOI: http://doi.org/10.5393/JAMCH.2015.40.3.115

Abstract

OBJECTIVES
Colorectal cancer is one of the major cancers in South Korea. We described the time trends in colorectal cancer incidence in Daejeon, a metropolitan city, and Chungcheongnam-do (Chungnam), a rural province, South Korea.
METHODS
Using the databases from the Daejeon Cancer Registry (DCR) and the Chungnam Cancer Registry (CCR), age-standardized (to world standard population) rates for incidence (ASRW) were calculated. Average annual percent change (AAPC) was assessed as a trend indicator. The completeness (such as the mortality/incidence ratio) and validity (such as the death certificate only %, microscopic verification %, primary site uncertain %, and age unknown %) were analyzed to examine the data quality of DCR and CCR.
RESULTS
Incidence of colorectal cancer showed increasing trend in both sexes. Over the years 2000-2012 in Daejeon, ASRW was increased significantly from 37.2 to 51.7 per 100,000 person-years (AAPC, 3.9%) among men and from 17.1 to 28.4 (AAPC, 3.9%) among women, respectively. In Chungnam, ASRW was also increased from 29.8 to 50.1 per 100,000 person-years (AAPC, 5.1%) among men and from 15.9 to 26.6 (AAPC, 3.2%) among women, respectively. The AAPC for colon cancer was greater than rectal cancer in both Daejeon and Chungnam. The trend of rectal cancer incidence was differ by sex (AAPC in men vs women, 2.7% vs 1.7% in Daejeon; 3.5% vs 0.8% in Chungnam). Indices of completeness and validity showed that the quality control of DCR and CCR was adequate to describe the trends of ASRW.
CONCLUSIONS
Both Daejeon and Chungnam have had a rapid increase in colorectal cancer incidence. Monitoring and intervention are required on the risk factors which may contribute to this trend.

Keyword

Colonic neoplasms; Epidemiology; Incidence; Registries

MeSH Terms

Chungcheongnam-do*
Colonic Neoplasms
Colorectal Neoplasms*
Data Accuracy
Death Certificates
Epidemiology
Female
Humans
Incidence*
Korea*
Male
Quality Control
Rectal Neoplasms
Registries
Risk Factors