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Fig. 1 | International Journal of Health Geographics

Fig. 1

From: sparrpowR: a flexible R package to estimate statistical power to identify spatial clustering of two groups and its application

Fig. 1

Comparison between the census tract of Fort Dodge, Iowa (Left) and the first iteration of simulated data (Right). Using sparrpowR, 8 cases and 428 controls were generated assuming multivariate normal distributions with standard deviations of 0.83 and 1.67 km, respectively. Simulated case locations are red-colored dots and simulated control locations are blue-colored dots. The identified concentrated animal feeding operation (CAFO) is signified by the black “X” symbol. The blue lines represent regions with radii of 5 and 10 km from the identified CAFO

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