Abstract
IntroductionThe objective of this observational, prospective, multicenter and multilevel study was to evaluate the oncological outcomes (local recurrence, metastasis and overall survival) of the Rectal Cancer Project of the Spanish Association of Surgeons (AEC) 10 years after its initiation, comparing the results with Scandinavian registries. MethodsThe AEC teaching project database includes 17,620 patients to date, of which 4,508 were operated on with a potentially curative resection between March 2006 and December 2010. All of them come from the first 59 hospitals included in the project, and therefore followed for at least 5 years, and are the subject of the present study. ResultsThe cumulative incidence of local recurrence was 7.3 (95% CI: 8.2-6.5), metastasis 21.0 (CI 95%: 22.4-19.7) and overall survival 72.3 (CI 95%: 80.3-77.6). The multilevel regression analysis with the hospital variable as a random effect, showed a significant variation among the hospitals for the cancer outcome variables: general survival, local recurrence and metastasis (δ2=0.053). ConclusionsThis study indicates that the results observed in the AEC’ Rectal Cancer Project are inferior than those observed in the Scandinavian registries that we tried to emulate and that this is attributable to the variability of practice in some centers.
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