Fig. 4From: Can routine data be used to support cancer clinical trials? A historical baseline on which to build: retrospective linkage of data from the TACT (CRUK 01/001) breast cancer trial and the National Cancer Data RepositoryDifference in overall survival between TACT dataset and NCDR extraction (red = NCDR data, blue = TACT data). NCDR National Cancer Data Repository, TACT Taxotere and Adjuvant ChemoTherapyBack to article page