Figure 1. Linear growth of standardized measures of colonoscopy centers (A) and individual colonoscopy providers (B) in relation to growth in the population aged 50–74, by urban vs. rural location, 2001–2010.
Footnote: Provider location is classified as urban or rural based on where the majority of their colonoscopy procedures were performed in a particular year. Each marker (Urban = diamond, Rural = triangle) on the graph represents a particular year of the study period, 2001 to 2010.
