. Author manuscript; available in PMC: 2022 Jun 13.

Published in final edited form as: Breast Cancer Res Treat. 2021 Nov 29;191(3):623–629. doi: 10.1007/s10549-021-06451-w

Table 3:

Tumor characteristics of interval cancers compared to screen-detected cancers from 339 breast cancer patients seen at the UCSF Breast Care Center. Certain components of pathology were not available for all patients, most notably tumor size. The ratios represent number of patients with the characteristic per those with data available.

Characteristic	Interval Cancers (n=61)	Screen-detected Cancers (n=278)	Odds Ratio	Confidence Interval	Difference
Size > 2 cm	27/48	52/193	3.49	1.82 – 6.70	<0.001^**
Lymph node invasion present	24/61	43/258	3.24	1.76 – 5.96	<0.001^***
Stage > 1	37/48	73/179	4.88	2.34 – 10.2	<0.001^***
Grade > 2	22/60	71/270	1.62	0.90 – 2.93	0.108
Hormone receptor negative	9/61	29/269	1.43	0.64 – 3.21	0.382

= p < 0.05

^**

= p < 0.01

^***

= p < 0.001; Standard Deviation (SD)