a nonsignificant trendP = 0.12
A separate update of the SMAC meta-analysis including this EORTC study with a total of 2170 patients, presented by O’Connor et al, showed a benefit of adjuvant chemotherapy for disease-free and overall survival after 5 years, but only a nonsignificant trend toward improved survival after 10 years (OR 0.87, P = 0.12). 7 A pooled analysis of individual patient data from the two largest adjuvant trials conducted by EORTC 6 , 8 using doxorubicin- and ifosfamide-based chemotherapy was also presented the same year and did not show a survival advantage for p