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. 2013 Jul 5;49(1):171–185. doi: 10.1111/1475-6773.12081

Table 1.

Definitions of Mammography Capacity

Variable Definition Assumptions
No access within 1 hour No mammography machines within a 1 hour drive from population-weighted block group centroid N/A
Inadequate capacity ≤0.674 machines/10,000 women Biennial screening of 81% of women aged 40+
Poor capacity No access within 1 hour or inadequate capacity Same as above
Adequate capacity >0.674 machines/10,000 women Same as above
Excess capacity ≥1.917 machines/10,000 women Annual screening of 100% of women aged 40+, plus 15% recalled for further evaluation