Fig. 2

Survival of PABC patients in different subgroups. a Comparison of 3-year DFS of patients with PABC developed in their first pregnancy (first pregnancy group) and PABC developed in non-first pregnancy. b Survival curve of patients with PABC developed in pregnancy phase and underwent abortion (abortion subgroup), in pregnancy phase but no abortion (non-abortion group) and PABC developed in lactation phase. The 3-year DFS was estimated between First-pregnancy group and Non-first-pregnancy group by Log-rank test with a P value of 0.325. The 3-year DFS was estimated among among Pregnancy (non-abortion) subgroup, Pregnancy (abortion) subgroup and Lactation subgroup of PABC by Log-rank test with a P value of 0.278. PABC=Pregnancy Associated Breast Cancer; DFS = Disease Free Survival