Table 3 Upstaging risk factor analysis for US-CNB-diagnosed DCIS (N = 200)

 Palpability

200

3.0

1.6–5.7

<0.001

2.3

0.9–6.2

0.1

 Lesion size (cm)

185

2.1

1.4–3.3

<0.001

1.73

0.98–3.4

0.08

 BI-RADS category (5)

176

3.6

0.97–23.3

0.10

 US-detected calcification

170

1.6

0.7–4.3

0.30

 BI-RADS category (0, 4, 5)

157

1.5

0.7–3.2

0.30

 Mass or distortion

141

0.98

0.5–2.0

0.95

 Calcification

143

2.2

1.04–4.6

0.04

1.6

0.6–4.2

0.3

 Core biopsy strip number

181

1.2

0.95–1.5

0.16

 High DCIS grade

145

4.8

2.2–11.6

<0.001

2.6

0.98–7.5

0.06

 Suspicious for microinvasion

190

7.1

1.4–129

0.06

4.0

0.6–77

0.2

 Negative ER

160

1.34

0.6–3.0

0.45