Table 2 Poisson regression models predicting the number of mammography facilities and units by census tract measures in Delaware and by county. Estimates may be interpreted as relative risks with corresponding 95% confidence intervals. Bold font denotes statistical significance

Deprivation^a

1.16 (0.63, 2.07)

1.12 (0.66, 1.85)

1.34 (0.51, 3.10)

1.27 (0.56, 2.60)

0.64 (0.18, 2.29)

0.44 (0.14, 1.33)

N. women 40–49^b

2.08 (1.25, 3.61)

2.30 (1.45, 3.78)

3.37 (1.48, 8.24)

5.63 (2.59, 13.3)

1.87 (0.91, 4.41)

1.94 (1.01, 4.19)

N. women 50–74^b

0.72 (0.36, 1.36)

0.59 (0.32, 1.05)

0.41 (0.15, 1.06)

0.25 (0.10, 0.58)

0.88 (0.24, 2.67)

0.70 (0.22, 1.89)

N. women > 74^b

1.01 (0.64, 1.53)

1.10 (0.75, 1.58)

1.23 (0.69, 2.09)

1.32 (0.81, 2.11)

0.93 (0.37, 2.01)

1.17 (0.57, 2.29)

Percent Black

women^b

0.35 (0.14, 0.77)

0.32 (0.15, 0.62)

0.21 (0.05, 0.74)

0.11 (0.03, 0.38)

0.54 (0.15, 1.50)

0.61 (0.22, 1.40)

Percent w/vehicles^b

0.42 (0.22, 0.82)

0.43 (0.25, 0.77)

0.38 (0.12, 1.41)

0.35 (0.11, 1.36)

0.47 (0.21, 0.98)

0.47 (0.24, 0.86)

N. bus stops^b

1.63 (1.20, 2.17)

2.08 (1.67, 2.59)

1.47 (0.94, 2.17)

2.24 (1.67, 3.04)

1.96 (1.04, 3.86)

2.18 (1.28, 3.93)