The occurrence of colorectal cancer in the United States is decreasing.1 We sought to determine whether the decrease began prior to increased colorectal cancer screening.
Correspondence: Dr Sonnenberg, Division of Gastroenterology, Portland VA Medical Center, P3-GI, 3710 SW US Veterans Hospital Rd, Portland, OR 97239 (firstname.lastname@example.org).
Published Online: April 29, 2013. doi:10.1001/jamainternmed.2013.656
Author Contributions:Study concept and design: Sonnenberg. Acquisition of data: Lee. Analysis and interpretation of data: Lee. Drafting of the manuscript: Lee. Critical revision of the manuscript for important intellectual content: Lee and Sonnenberg. Statistical analysis: Sonnenberg.
Conflict of Interest Disclosures: Dr Sonnenberg was supported by a grant from Takeda Pharmaceuticals. No funding was obtained for the present study.