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. Author manuscript; available in PMC: 2018 Oct 1.
Published in final edited form as: Ann Epidemiol. 2017 Sep 20;27(10):654–658. doi: 10.1016/j.annepidem.2017.09.002

Table 3.

The role of measured facility characteristics versus individual facilities in mediating the racial disparity (nL Black vs. nL White) in the prevalence of interval breast cancer diagnosed within 18 months of a screening mammogram.

N PD (95% CI)1 (P-value)3
All available data
 Baseline adjust for age 3788 – 2.1 (−4.7, 2.6)
 Add patient characteristics except BMI4 3788 0.0 (−3.0, 3.4) <0.0001
 Add facility-level factors5 3788 4.5 (−1.0, 9.7) <0.0001
 Add both patient and facility-level factors 3788 5.1 (0.3, 9.9) <0.0001
For patients with data on BMI
 Baseline adjust for age 2238 – 0.1 (−3.3, 2.3)
 Add patient characteristics except BMI4 2238 1.6 (−1.8, 5.0) <0.0001
 Add patient characteristics including BMI4 2238 2.8 (−0.11, 6.8) <0.0001
 Add facility-level factors5 2238 8.7 (2.9, 14.9) <0.0001
 Add both patient and facility-level factors 2238 9.5 (4.4, 17.7) <0.0001
1

PD Prevalence difference for the Black White disparity in interval breast cancer within 18 months of a screening mammogram, estimated via logistic regression with marginal standardization, 95% CI via bias-corrected bootstrap methods.

3

P-value from a test of the difference in rescaled coefficients compared to the baseline model.

4

BMI, analog vs. digital mammogram, availability of a comparison film, breast density and time since last screen.

5

Facility type (stand-alone, hospital, non-comprehensive, or comprehensive breast center) and proportion of patients that were nL Black.