Title:
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Socioeconomic status and exposure to disinfection by-products in drinking water in Spain
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Author:
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Castaño Vinyals, Gemma; Cantor, Kenneth P; Villanueva Belmonte, Cristina; Tardón, Adonina; García Closas, Reina; Carrato, Alfredo; Malats i Riera, Núria; Rothman, Nathaniel; Silverman, Debra T.; Kogevinas, Manolis; Serra, Consol
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Abstract:
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Background: Disinfection by-products in drinking water are chemical contaminants that have been associated with cancer and other adverse effects. Exposure occurs from consumption of tap water, inhalation and dermal absorption. Methods: We determined the relationship between socioeconomic status and exposure to disinfection by-products in 1271 controls from a multicentric bladder cancer case-control study in Spain. Information on lifetime drinking water sources, swimming pool attendance, showering-bathing practices, and socioeconomic status (education, income) was collected through personal interviews. Results: The most highly educated subjects consumed less tap water (57%) and more bottled water (33%) than illiterate subjects (69% and 17% respectively, p-value = 0.003). These differences became wider in recent time periods. The time spent bathing or showering was positively correlated with attained educational level (p < 0.001). Swimming pool attendance was more frequent among highly educated subjects compared to the illiterate (odds ratio = 3.4; 95% confidence interval 1.6-7.3)./n/nConclusions: The most highly educated subjects were less exposed to chlorination by-products through ingestion but more exposed through dermal contact and inhalation in pools and showers/baths. Health risk perceptions and economic capacity may affect patterns of water consumption that can result in differences in exposure to water contaminants. |
Abstract:
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This work was supported by the Intramural Program of the National Institutes of Health, National Cancer Institute (NCI), Division of Cancer Epidemiology and Genetics, NCI-Westat contract no. N02-CP-11015, FIS/Spain 00/0745, G03/174, PI061614, CA34627, and Red Temática de Investigación Cooperativa en Cáncer (RTICC). Cristina M Villanueva has a contract funded by the Instituto de Salud Carlos III, Spanish Ministry of Health and Consumption (CP06/00341). |
Subject(s):
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-Aigua -Càncer -Contaminació -Consum |
Rights:
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© 2011 Castaño-Vinyals et al; licensee BioMed Central Ltd. /nThis is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
http://creativecommons.org/licenses/by/2.0 |
Document type:
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Article Article - Published version |
Published by:
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BioMed Central
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