Fig 4.

Cumulative incidence rates of ipsilateral invasive breast cancer and 95% confidence intervals in 29 044 women with unilateral ductal carcinoma in situ (DCIS) detected as a result of screening during April 2000 to March 2014 and who had surgery. Women with oestrogen receptor positive DCIS and recorded as receiving endocrine treatment were excluded from the top two graphs. BCS+RT=breast conserving surgery, radiotherapy recorded; BCS-RT=breast conserving surgery, radiotherapy not recorded; ER+, endocrine=oestrogen receptor positive DCIS and endocrine treatment recorded; ER+, no endocrine=oestrogen receptor positive DCIS and endocrine treatment not recorded. *Number of ipsilateral invasive breast cancers during interval; †Number of women at risk of ipsilateral invasive breast cancer at start of interval