Comparing Data from Three Satellites on Artificial Light at Night (ALAN): Focusing on Blue Light's Influence on Colorectal Cancer in a Case-Control Study in Spain.

The article presents an analysis of pixel values extracted for each residential address using geographic information system (GIS) data from three satellites and evaluated their associations with odds of colorectal cancer (CRC) to compare how consistent associations were across exposure data sources. Topics include comparison of visual light estimates, association of artificial light at night (ALAN) exposure with CRC, and recommendation on future epidemiological studies.