국가 암 발생 데이터베이스에 등록된 암환자의 연령군별 생존율: 기간 분석 방식에 의한 1997년과 2002년도 생존율 비교

Comparison of Cancer Survival by Age Group for 1997 and for 2002: Application of Period Analysis using the National Cancer Incidence Database

  • 임선의 (국립암센터 국가암관리사업단 암등록통계과) ;
  • 정규원 (국립암센터 국가암관리사업단 암등록통계과) ;
  • 원영주 (국립암센터 국가암관리사업단 암등록통계과) ;
  • 공현주 (국립암센터 국가암관리사업단 암등록통계과) ;
  • 신혜림 (국립암센터 국가암관리사업단 암등록통계과)
  • Yim, Seon-Hee (Cancer Registration and Biostatistics Branch, National Cancer Control Research Institute, National Cancer Center) ;
  • Jung, Kyu-Won (Cancer Registration and Biostatistics Branch, National Cancer Control Research Institute, National Cancer Center) ;
  • Won, Young-Joo (Cancer Registration and Biostatistics Branch, National Cancer Control Research Institute, National Cancer Center) ;
  • Kong, Hyun-Joo (Cancer Registration and Biostatistics Branch, National Cancer Control Research Institute, National Cancer Center) ;
  • Shin, Hai-Rim (Cancer Registration and Biostatistics Branch, National Cancer Control Research Institute, National Cancer Center)
  • 발행 : 2008.01.31

초록

Objectives : Period analysis estimates up-to-date survival rates of cancer patients. In this approach, analysis is restricted to recent time period by left-truncating all observations at the beginning of the period and right-censoring at its end. Here, we applied period analysis to examine changes in 5-year relative survival (RS) by age group for 1997 and for 2002. Methods : Using the National Cancer Incidence Database, 5-year RS was estimated for 1997 and 2002 in four age groups (15-54, 55-64, 65-74, and 75 years old and over) using period analysis. After excluding death certificate-only cases, patients with an unknown date of diagnosis or follow-up length, a total of 813,889 patients diagnosed with a first primary invasive cancer during 1992 2002 were included for analysis. Followup for vital status was included until 31 December 2002. Results : Five-year RS increased from 41.7% for 1997 to 46.7% for 2002. Increases in survival occurred in all age groups except in the 75 and over group. Conclusions : The age gradient in cancer prognosis seems to have widened between 1997 and 2002, a finding that requires further study of prognostic factors, including stage at diagnosis. Period analysis accurately estimates survival rates, especially for cancers with better prognosis.

키워드

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