Colonoscopy screening markedly reduces the occurrence of colon carcinomas and carcinoma-related death: a closed cohort study - 20/06/12
Reprint requests: Professor Dr. Urs A. Marbet, Spitalstrasse 1, Altdorf CH-6460 SwitzerlandRésumé |
Background |
Colonoscopy with a possible polypectomy is an efficient and preferred screening method to reduce the incidence of colorectal cancer (CRC). However, critics argue that, to date, a reduction of incidence and mortality from CRC has not been demonstrated in a population-based setting.
Objective |
To compare the incidence of and mortality from CRC among individuals screened by colonoscopy and non-screened individuals.
Design |
A closed cohort study.
Setting |
Population-based setting in a precisely defined area with a low level of population migration.
Patients |
This study involved 1912 screened and 20,774 control participants.
Intervention |
CRC cases in this closed cohort study were prospectively collected during the screening period of 1 year and the follow-up period of 6 years.
Main Outcome Measurements |
Follow-up data were corrected for negligible migration balance in the area. Tumor characteristics and risk or protective factors, age and sex, participation in general health screening examinations, history of CRC in a first-degree relative, smoking status, body mass index, frequency of sports activity, eating habits, and patients' professions were recorded.
Results |
Overall cancer incidence was significantly lower in the screened group compared with the non-screened group (adjusted odds ratio [OR] 0.31; 95% confidence interval [CI], 0.16-0.59; P < .001). Colon cancer–associated mortality also was clearly lower (adjusted OR 0.12; 95% CI, 0.01-0.93; P = .04). Risk factors such as lifestyle, smoking, and body mass index as well as family history were similar in both groups. Blue-collar workers had a higher incidence of CRC compared with professionals. The risk factors for CRC were a positive family history and smoking.
Limitations |
Number and ethnicity of the participants, non-randomized study.
Conclusion |
Colonoscopy with polypectomy significantly reduces CRC incidence and cancer-related mortality in the general population.
Le texte complet de cet article est disponible en PDF.Abbreviations : CRC
Plan
| DISCLOSURE: The initial screening study was supported by grants to Prof. Urs Marbet from the Swiss and Regional Cancer Leagues of Central Switzerland Glarus, the Gastroenterological Society GastroMed Swiss, and the Basel Foundation for Cancer Research. No other financial relationships relevant to this publication were disclosed. |
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| If you would like to chat with an author of this article, you may contact Dr Marbet at urs.marbet@ksuri.ch. |
Vol 76 - N° 1
P. 110-117 - juillet 2012 Retour au numéro
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