Skip to main content

Table 3 Accuracy of animal feeding operations (AFO) exposure classification for Agricultural Health Study addresses in 14 counties in Iowa, by geo-location data source, overall and by rural status

From: Accuracy of residential geocoding in the Agricultural Health Study

   Sensitivity Specificity ORobsb
≥1 AFO within distance of address Prevalence (%)a Address-matched E911 Address-matched E911 Address-matched E911
Overall        
  2 km 41.6 65.7 98.5 75.5 99.0 1.33 1.97
  5 km 91.8 95.4 99.9 48.1 99.3 1.30 1.98
Rural a        
  2 km 52.3 63.6 98.4 67.7 98.3 1.23 1.95
  5 km 92.0 94.4 99.9 39.0 98.9 1.20 1.98
Non-rural        
  2 km 21.7 75.2 99.2 84.3 99.8 1.46 1.99
  5 km 91.4 97.2 99.9 63.8 100.0 1.49 1.98
  1. a≥1 AFO present within specified distance from home was based on rooftop location.
  2. bWhere ORtrue =2.0.