Table 4

Variables associated multivariately with breast cancer death and development of invasive cancer in either breast after a primary DCIS of the breast

VariableBreast cancer death OR (95% CI) [cases/controls]Ipsilateral cancer OR (95% CI) [cases/controls]Contralateral cancer OR (95% CI) [cases/controls]
Total[39/99][70/185][48/129]
Age
 <50 yr1.6 (0.8–8.3) [13/37]0.7 (0.2–2.4) [19/69]0.7 (0.2–2.7) [17/51]
 50–59 yrRefa [7/28]Ref [17/37]Ref [13/26]
 >59 yr1.2 (0.2–7.5) [19/34]0.9 (0.2–3.4) [34/79]1.2 (0.3–4.3) [18/52]
Size, ≥25 mm vs. <25 mm2.9 (0.8–10.1) [24/65]2.3 (0.7–7.0) [43/117]1.7 (0.5–5.1) [25/73]
Treatment
 BCSRef [13/32]Ref [48/60]Ref [10/29]
 BCS + XRT1.4 (0.1–18.1) [1/9]0.1 (0.0–1.0) [2/13]3.6 (0.3–43.5) [6/4]
 Mastectomy1.8 (0.4–7.6) [25/57]0.1 (0.0–0.5) [18/104]0.7 (0.2–2.9) [30/82]
  • a Ref, Reference group with an odds ratio 1.0.