Skip to main content
. Author manuscript; available in PMC: 2023 Jul 15.
Published in final edited form as: Sci Total Environ. 2022 Mar 25;830:154823. doi: 10.1016/j.scitotenv.2022.154823

Table 5.

The association between low, medium, and high hog CAFO exposure (based on tertiles of exposed ZIP codes) and AGI ED visit rate, compared to ZIP codes with no hog CAFO exposure (IPTW control, weights truncated at 1% and 99%).

Hog CAFO exposure Category Mean hog density (hogs/sqmi) Mean hog measure1 Rate Ratio (95% CI) Number of AGI ED visits
No hog CAFO exposure 0 0 (ref) 205,116
Low hog CAFO exposure2 0 0.001 0.95 (0.75, 1.16) 107,845
Medium hog CAFO exposure 30 0.31 1.13 (0.94, 1.32) 172,595
High hog CAFO exposure 654 8.32 1.11 (0.92, 1.30) 107,077
1

Mean value of the Gaussian decay hog CAFO measure

2

Low hog CAFO exposure represents ZIP codes that are within 10 miles of a hog CAFO but there are no hog CAFOs within the ZIP code and no very large hog CAFOs nearby.