Response to letter commenting on paper EJC-D-12-01401: Use of aspirin post-diagnosis in a cohort of patients with colorectal cancer and its association with all-cause and colorectal cancer specific mortality

摘要

We thank the authors for their interest in our paper but do not feel that their use of the word 'concerns' (with its implied aspersions) as to our results is appropriate. We stand by the data we presented in our paper, but acknowledge its limitations. As stated within our paper, this was a retrospective cohort study, using existing routinely collected data, in a large fixed population {n = 2990) designed to assess population based associations with sufficient power.