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Advanced detection of recent changing trends in gastric cancer survival: up-to-date comparison by period analysis.

 Hyo Song Kim  ;  Hyunkyoung Lee  ;  Sun Young Rha  ;  Chung Mo Nam  ;  Jae Kyung Roh  ;  Hyun Cheol Chung  ;  Sung Hoon Noh  ;  Hei Chul Jeung 
 Japanese Journal of Clinical Oncology, Vol.41(12) : 1344-1350, 2011 
Journal Title
 Japanese Journal of Clinical Oncology 
Issue Date
OBJECTIVE: To establish a comprehensive cancer treatment and prevention policy, data collection should be performed in a timely manner, and survival analysis needs to reflect changes in treatment strategy. Therefore, we introduced the concept of period analysis for gastric cancer, the most prevalent cancer in Korea. We estimated 5- and 10-year survival trend of gastric cancer, based on data from the Yonsei Cancer Center Tumor Registry between 1990 and 2004. METHODS: We compared the differences in survival between cohort, complete and period analyses for two different periods, 1995-99 and 2000-04. RESULTS: A total of 11 724 cases were included. The median age of cancer diagnosis gradually increased over time, and more patients were diagnosed with Stage I disease in recent years. In the basic comparison of three estimated analytic methods (cohort, complete and period), period analysis (45.8%) was most similar to the actual 5-year observed survival rate (48.5%), when compared with cohort (43.6%) and complete (44.8%) analyses. When we compared survival between different 10-year periods (1990-99 and 1995-2004), period analysis demonstrated a greater difference than complete analysis (9.0 versus 3.9%). Subgroup analysis indicated that the survival improvement was determined by period analysis, and it was more pronounced for the age group <74 years and in Stages III-IV patients. CONCLUSIONS: We observed that period analysis demonstrates the most similar results to the actual observed survival and is, therefore, a useful method to derive precise cancer survival in gastric cancer. This information is useful to understand survival differences that are influenced by changing treatment strategy.
Appears in Collections:
1. Journal Papers (연구논문) > 1. College of Medicine (의과대학) > Dept. of Preventive Medicine (예방의학교실)
1. Journal Papers (연구논문) > 1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실)
1. Journal Papers (연구논문) > 1. College of Medicine (의과대학) > Dept. of Surgery (외과학교실)
Yonsei Authors
김효송(Kim, Hyo Song) ; 남정모(Nam, Jung Mo) ; 노성훈(Noh, Sung Hoon) ; 노재경(Roh, Jae Kyung) ; 라선영(Rha, Sun Young) ; 정현철(Chung, Hyun Cheol) ; 정희철(Jeung, Hei Cheul)
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