Table 3. County-Level (N = 210 Counties) Association Between Proportion of Residents With Access to Screening Within 30 Miles (in 2019) and Age-Adjusted Lung Cancer Mortality Among Adults Aged ≥60 (in 2013–2017), Adjusted for Rurality (in 2019), and Demographic Characteristics (in 2013–2017), Missouri and Illinois.

Model Parameter	Change in Mortality per 100,000 Population, β (95% CI) [P Value]
Percentage of census block groups with access to lung cancer screening within 30 miles	0.04 (−0.15 to 0.23) [.68]
Degree of ruralitya
Large central metro	1 [Reference]
Large fringe metro	8.9 (−54.8 to 72.6) [.78]
Medium metro	−8.7 (−74.5 to 57.0) [.79]
Small metro	3.4 (−58.3 to 65.2) [.91]
Micropolitan	2.7 (−60.9 to 66.3) [.93]
Noncore	−4.6 (−68.5 to 59.3) [.89]
State
Illinois	1 [Reference]
Missouri	−41.2 (−68.2 to −14.2) [.003]
Demographic characteristics
Percentage of population that reports smokingb	9.7 (4.6 to 14.9) [<.001]
Median annual household income, in thousands, $c	0.4 (−0.9 to 1.8) [.52]
Percentage of population aged ≥25 with a college degreec	−2.7 (−3.9 to −1.5) [<.001]
Percentage of population that is Whitec	0.2 (−1.1 to 1.6) [.76]
Percentage of population that is African Americanc	0.8 (−1.1 to 2.7) [.42]

^a Determined by National Center for Health Statistics (17).

^b Determined by 2019 County Health Rankings (19).

^c Determined by American Community Survey 5-year estimates (15).