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. Author manuscript; available in PMC: 2020 Feb 1.
Published in final edited form as: Breast Cancer Res Treat. 2018 Nov 17;174(1):227–235. doi: 10.1007/s10549-018-5048-8

Table 1.

Characteristics of 1,252 DCIS cases from the Vermont Breast Cancer Surveillance System.

All
(N=1252)
Mastectomy
(N=201)
BCS alone
(N=327)
BCS + RT
(N=318)
BCS + RT and ET
(N=276)
BCS + ET
(N=130)
N % N % N % N % N % N %
Age at diagnosis
 <40 27 2.2 7 3.5 7 2.1 5 1.6 8 2.9 0 0.0
 40–49 300 24.0 53 26.4 78 23.8 73 23.0 72 26.1 24 18.5
 50–59 379 30.3 48 23.9 79 24.2 104 32.7 107 38.8 41 31.5
 60–69 277 22.1 53 26.4 52 15.9 82 25.8 56 20.3 34 26.2
 70–79 194 15.5 35 17.4 62 19.0 42 13.2 30 10.9 25 19.2
 80+ 75 6.0 5 2.5 49 15.0 12 3.8 3 1.1 6 4.6
Year of diagnosis
 1994–1998 218 17.4 40 19.9 85 26.0 85 26.7 3 1.1 5 3.9
 1999–2003 386 30.8 74 36.8 106 32.4 56 17.6 92 33.3 58 44.6
 2004–2008 378 30.3 54 26.9 88 26.9 90 28.3 110 39.9 36 27.7
 2009–2012 270 21.6 33 16.4 48 14.7 87 27.4 71 25.7 31 23.9
Mode of detection
 Screen-detected 948 85.3 140 80.9 234 82.7 226 85.3 239 90.2 109 86.5
 Symptom-detected 164 14.7 33 19.1 49 17.3 39 14.7 26 9.8 17 13.5
 Missing 140 28 44 53 11 4
Grade
 Low 162 14.8 16 9.4 58 21.6 22 8.2 32 12.0 34 27.9
 Intermediate 544 49.7 75 44.1 147 54.9 120 44.9 133 49.8 69 56.6
 High 388 35.5 79 46.5 63 23.5 125 46.8 102 38.2 19 15.6
 Missing 158 31 59 51 9 8
Size
 <= 1 cm 492 57.6 52 39.7 151 73.3 119 51.3 102 50.7 68 80.9
 1.1–2 cm 206 24.1 31 23.7 33 16.0 69 29.7 62 30.8. 11 13.1
 >2 cm 156 18.3 48 36.6 22 10.7 44 19.0 37 18.4 5 6.0
 Missing 398 70 121 86 75 46
ER status
 Negative 102 17.7 29 34.5 13 11.5 53 34.4 6 3.8 1 1.5
 Positive 474 82.3 55 65.5 100 88.5 101 65.6 151 96.2 67 98.5
 Missing 676 117 214 164 119 62

Abbreviations: BCS, breast conserving surgery; ER, estrogen receptor; ET, endocrine therapy; RT, radiation therapy.