title: Prevalence of patients with colorectal cancer requiring follow-up or active treatment.
abstract: BACKGROUND
  The objective of this study was to estimate prevalence of colorectal cancers requiring care or follow-up.
  
  
  METHODS
  Prevalence was observed in 2005 on the population-based digestive cancer registry of Burgundy (France). Total and 5-year partial prevalences were calculated. The prevalence of patients requiring follow-up was estimated using non-mixture cure models. The prevalence of patients with recurrence was estimated using annual recurrence rates.
  
  
  RESULTS
  Total prevalence was 262,244 cases in France. The mean variation in 5-year partial prevalence between successive 5-year periods was +8.0%. Time to cure was estimated to be 9.3 years, suggesting that follow-up is needed over a 10-year period, corresponding to 71.7% of prevalent cases. In 2005, 5.4% of prevalent cases had recurrent cancer requiring treatment.
  
  
  CONCLUSIONS
  This study underlines the burden of colorectal cancer on the health system. Prevalence of patients requiring follow-up or treatment provides interesting information in addition to classic indicators.
authors.affiliation: Registre Bourguignon des Cancers Digestifs, Inserm U866, Université de Bourgogne, CHU Dijon, Dijon F-21079, France.
authors.forename: Marion
authors.initials: M
authors.lastname: Chauvenet
authors.forename: Côme
authors.initials: C
authors.lastname: Lepage
authors.forename: Valérie
authors.initials: V
authors.lastname: Jooste
authors.forename: Vanessa
authors.initials: V
authors.lastname: Cottet
authors.forename: Jean
authors.initials: J
authors.lastname: Faivre
authors.forename: Anne-Marie
authors.initials: AM
authors.lastname: Bouvier
mesh_terms: D000328:Adult; D000368:Aged; D015179:Colorectal Neoplasms / Q000453:epidemiology* / Q000401:mortality / Q000628:therapy; D005260:Female; D005602:France / Q000453:epidemiology; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local / Q000453:epidemiology / Q000401:mortality / Q000628:therapy; D015995:Prevalence; D012042:Registries; D015996:Survival Rate