Spatial accessibility to colonoscopy and its role in predicting late-stage colorectal cancer.

ABSTRACT:

Objective

To better determine the relationship between spatial access to colonoscopy and colorectal cancer (CRC) outcomes, our objective was to examine the agreement of the classic, enhanced, and variable two-step floating catchment area (2SFCA) methods in evaluating spatial access to colonoscopy and to compare the predictive validity of each method related to late-stage CRC. 2SFCA methods simultaneously consider supply/demand of services and impedance (ie, travel time).

Data sources

Colonoscopy provider locations were obtained from the South Carolina Ambulatory Surgery Database. ZIP code tabulation area (ZCTA) level population estimates and area-level poverty level were obtained from the American Community Survey. Rurality was determined by the United States Department of A

SUBMITTER: Zahnd WE 

PROVIDER: S-EPMC7839638 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature