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Spat Spatiotemporal Epidemiol. 2018 Aug;26:143-151. doi: 10.1016/j.sste.2018.06.003. Epub 2018 Jun 19.

Kernel density analysis reveals a halo pattern of breast cancer incidence in Connecticut.

Author information

1
Department of Natural Resources and Environment Management, Faculty of Management, University of Haifa, Haifa, Israel.
2
Department of Community Medicine, School of Medicine, University of Connecticut, Farmington, CT 06030, United States. Electronic address: bugs@uchc.edu.
3
Department of Community Medicine, School of Medicine, University of Connecticut, Farmington, CT 06030, United States.

Abstract

Breast cancer (BC) incidence rates in Connecticut are among the highest in the United States, and are unevenly distributed within the state. Our goal was to determine whether artificial light at night (ALAN) played a role. Using BC records obtained from the Connecticut Tumor Registry, we applied the double kernel density (DKD) estimator to produce a continuous relative risk surface of a disease throughout the State. A multi-variate analysis compared DKD and census track estimates with population density, fertility rate, percent of non-white population, population below poverty level, and ALAN levels. The analysis identified a "halo" geographic pattern of BC incidence, with the highest rates of the disease observed at distances 5-15 km from the state's major cities. The "halo" was of high-income communities, with high ALAN, located in suburban fringes of the state's main cities.

KEYWORDS:

Artificial light-at-night (ALAN); Breast cancer (BC); Connecticut; Double kernel density (DKD) analysis

PMID:
30390929
DOI:
10.1016/j.sste.2018.06.003
[Indexed for MEDLINE]

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