NDLI: Nighttime light level co-distributes with breast cancer incidence worldwide

Content Provider	Springer Nature Link
Author	Kloog, Itai Stevens, Richard G. Haim, Abraham Portv, Boris A.
Copyright Year	2010
Abstract	Breast cancer incidence varies widely among countries of the world for largely unknown reasons. We investigated whether country-level light at night (LAN) is associated with incidence. We compared incidence rates of five common cancers in women (breast, lung, colorectal, larynx, and liver), observed in 164 countries of the world from the GLOBOCAN database, with population-weighted country-level LAN, and with several developmental and environmental indicators, including fertility rate, per capita income, percent of urban population, and electricity consumption. Two types of regression models were used in the analysis: Ordinary Least Squares and Spatial Errors. We found a significant positive association between population LAN level and incidence rates of breast cancer. There was no such an association between LAN level and colorectal, larynx, liver, and lung cancers. A sensitivity test, holding other variables at their average values, yielded a 30–50% higher risk of breast cancer in the highest LAN exposed countries compared to the lowest LAN exposed countries. The possibility that under-reporting from the registries in the low-resource, and also low-LAN, countries created a spurious association was evaluated in several ways and shown not to account for the results. These findings provide coherence of the previously reported case–control and cohort studies with the co-distribution of LAN and breast cancer in entire populations.
Starting Page	2059
Ending Page	2068
Page Count	10
File Format	PDF
ISSN	09575243
Journal	Cancer Causes & Control
Volume Number	21
Issue Number	12
e-ISSN	15737225
Language	English
Publisher	Springer Netherlands
Publisher Date	2010-08-03
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Breast cancer Epidemiology Geography Light at night (LAN) Hematology Public Health/Gesundheitswesen Oncology Biomedicine general Cancer Research
Content Type	Text
Resource Type	Article
Subject	Cancer Research Oncology

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