Table 3.

Adjusted logistic regression results for mammography surveillance in year one post treatment in elderly Medicaid and Medicare breast cancer patients who received BCS, OR (95% CI)

Independent variables (referent)	Surveillance mammography N=2,998
Eligibility (Medicare)	1.00
Dual (Medicaid and Medicare)	0.80 (0.57–1.11)
Age (66–69 years)	1.00
70–74	1.02 (0.78–1.33)
75–79	0.90 (0.69–1.19)
80–84	0.68 (0.50–0.92)*
85+	0.34 (0.24–0.48)**
Race (Caucasian)	1.00
African American	0.73 (0.50–1.05)
Other	1.39 (0.60–3.23)
Stage at diagnosis (I)	1.00
II	0.73 (0.62–0.85)**
Comorbidity (0)	1.00
1	0.72 (0.56–0.92)**
2	0.59 (0.40–0.86)**
3 or more	0.37 (0.21–0.64)**
Education	1.00
<12th Grade Education	0.29 (0.11–1.09)
BCS without Radiation ϕ	1.00
BCS with radiation	1.82 (1.48–2.24)**
No Physician visit within 1 year post treatment α	1.00
Physician visit within 1 year post treatment	4.44 (2.89–6.83)**

The regression model also includes annual household income, number of radiation oncologists and number of general Practitioners/100,000 persons, percent minority composition of community, and rural/urban status

^*p<0.01 χ² likelihood ratio test

^**p<0.001 χ² likelihood ratio test

^ϕExcludes those with mastectomy

^αPost treatment refers to the 12 months after last treatment received