Table 4.

Chest wall recurrence rates by patient subgroup

Variable	N	Chest wall recurrences	10 year actuarial chest wall recurrence rate	p value
Age				0.20
<45	248	7	2.7
45–50	243	7	2.9
>50	1033	22	2.4
Nuclear Grade				0.44
Low	99	<5	<5%
Intermediate	286	<5	<5%
High	426	13	3.5
Unreported	713	18	2.6
Margin Width				0.24
≤2 mm	668	19	2.7
>2 mm	436	7	2.1
Missing	367	10	2.9
Multifocality				0.37
Present	340	6	2.7
Absent	1184	30	1.9
Necrosis				0.80
Present	618	14	2.5
Absent	906	27	1.3
Histologic Subtype				0.08
Solid	833	27	3.6
Cribriform	256	<5	<5
Other	107	<5	<5
Unreported	328	<5	<5
Year of Diagnosis
1994–1996	378	15	4.0	0.1
1997–1999	499	12	2.4
2000–2002	647	9	1.4
Combined factors
Age <45 years + high grade grgrade	83	<5	<5
Age < 45 years + margins <2 mm	130	<5	<5
High grade + margins <2 mm	202	6	3.2