Table 3.

Multivariate Model: Factors Predicting Receipt of MIBB^*

FACTOR (reference group)	OR	95% Confidence Interval
Year of diagnosis (per year)	1.22	1.21–1.23
Age (per year)	1.00	0.99–1.00
Race/Ethnicity
White (Hispanic)	1.25	1.18–1.32
Black (Hispanic)	1.38	1.28–1.50
Other (Hispanic)	1.35	1.12–1.61
Breast Cancer Diagnosis after biopsy (benign)	1.32	1.27–1.36
Education quartile (compared to lowest Q1)
Quartile 2 (Q1)	1.07	1.02–1.12
Quartile 3 (Q1)	1.17	1.12–1.23
Quartile 4 (Q1)	1.45	1.37–1.52
Size of MSA
≥1 million (≤10,000)	1.92	1.83–2.01
250,000 to <1 million (≤10,000)	0.85	0.80–0.91
>10,000 to <250,000 (≤10,000)	1.24	1.17–1.31

^*Main effects shown in this table. Interactions between race/ethnicity and MSA, and MSA and education were significant and are included in the model.