Extended Data Fig. 3: PFS in subgroups of interest.

The forest plot shows the hazard ratios (diamonds) and 95% two sided confidence intervals (error bars) estimated using an unadjusted Cox proportional hazard model in each subgroup. P-value for interaction between treatment arm and each parameter from a Cox proportional hazard model fitted with the parameter, the treatment arm, and an interaction term between treatment arm and parameter is reported. All statistical tests were two sided. No adjustment was made for multiple comparisons. No. Evts: number of events; No Pts: number of patients; PFS: Progression Free Survival; HR: Hazard Ratio; CI: confidence intervals (two-sided); TNBC: Triple Negative Breast Cancer; ECOG-PS: Eastern Cooperative Oncology Group-Performance Status; D: Durvalumab; MC: maintenance chemotherapy.