Research Article

[Retracted] Efficacy and Risk Factors of Pyrrotinib in Second- and Third-Line Treatments for HER2-Positive Advanced Breast Cancer

Figure 2

The progression-free survival of patients. (a) The Kaplan-Meier curve of PFS in patients undergoing second-line and third-line treatment, where the log-rank between groups; (b) the Kaplan-Meier curve of PFS in all patients. PFS refers to progression-free survival.
(a)
(b)