Table 3.

Concordance in 5-year breast cancer-specific prognosis (good, medium, or poor) among 2,787 mother-daughter pairs^a

Age of mother at diagnosis (years)	Concordance in poor prognosis		Overall concordance in prognosis
	Events	Proportion	Events	Proportion
<40	12/13	0.92	37/43	0.86
40–49	60/66	0.91	166/264	0.62
50–59	129/147	0.88	337/522	0.64
60–69	211/251	0.84	502/819	0.61
70+	324/442	0.73	613/1,139	0.53
All ages	736/919	0.80	1,656/2,787	0.59
Test for trend	p < 0.001		p < 0.001

^aConcordance in 5-year breast cancer-specific prognosis (good, medium, or poor) by age at diagnosis in mother among mother-daughter pairs as defined by Cox proportional hazards models.