Table 4.

Adjusted risk estimate of overall survival using published definitions of PABC and control cohorts

Parity group	Adjusted HRa	95 % CI	p
PABC ≤1 (n = 33)	0.78	0.29–2.11	0.63
Non-PABC (A) (n = 318)	1.0	–	–
PABC ≤1 (n = 33)	0.77	0.28–2.08	0.60
Non-PABC (B) (n = 242)	1.0	–	–

PABC ≤1, cases diagnosed during pregnancy or up to one-year postpartum; Non-PABC (A), nulliparous cases and parous cases diagnosed >1 year from last childbirth. Non-PABC (B) ^,parous cases diagnosed >1 year from last childbirth (nulliparous excluded)

^aAdjusted for tumor biologic subtype, clinical stage and year of diagnosis