Abstract
Objectives
To determine the extent, range and types of studies of differential environmental chemical exposures among non-Indigenous Canadians as a function of sex/gender and race/ethnicity.
Methods
Computerized database searches were performed from November to December 201 3 using Medline, Embase, CAB Abstracts, Proquest and Scopus to identify relevant studies of environmental exposures among non-Indigenous adults aged >-18 years in Canada published between 1993 and 201 3. Articles were identified for full-text review based on a screening of titles and abstracts and were excluded during this initial review if they focused on environmental exposures in the following populations: 1) Indigenous populations, 2) individuals <15 years of age, 3) pregnant women and associated negative birth outcomes, or 4) non-Canadian populations. Articles were also excluded if the primary focus was on exposures to environmental tobacco smoke, non-chemical occupational hazards, infectious diseases, noise and/or radiation. A full-text review of 78 identified articles systematically assessed how sex/gender and race/ethnicity were considered.
Synthesis
Although 59% of studies stratified results by sex, less than half of these offered any explanation of differential exposures. Eighteen of the 78 studies (23%) used terms related to race/ethnicity in their participant descriptions. Of the studies that conducted subgroup analyses of exposure results by race/ethnicity (n=15), a total of 8 also included subgroup analysis by sex. Overall, 3 of the 78 (3%) articles reviewed analyzed environmental exposures as a function of sex/gender and race/ethnicity.
Conclusion
The role of sex/gender and race/ethnicity in influencing environmental exposure levels among non-Indigenous Canadians has not been adequately addressed to date.
Key Words: Environmental health, women, minority health
Résumé
Objectifs
Déterminer le nombre, la portée et les types d’études sur l’exposition différentielle aux produits chimiques dans l’environnement dans la population canadienne non indigène en fonction du sexe/du genre et de la race/de l’ethnicité.
Méthode
Des recherches informatisées ont été effectuées de novembre à décembre 201 3 dans les bases de données Medline, Embase, CAB Abstracts, Proquest et Scopus pour repérer les études pertinentes sur l’exposition environnementale des adultes non indigènes de >-18 ans au Canada publiées entre 1993 et 201 3. Les articles à examiner en version intégrale ont été choisis par filtrage des titres et des résumés; durant cet examen initial, on a exclu les articles portant sur l’exposition environnementale dans les populations suivantes: 1) populations indigènes, 2) personnes <15 ans, 3) femmes enceintes et issues négatives de la grossesse associées ou 4) populations non canadiennes. Nous avons aussi exclu les articles dont le thème principal était l’exposition à la fumée secondaire du tabac, aux dangers professionnels non chimiques, aux maladies infectieuses, au bruit et/ou aux rayonnements. Un examen du texte intégral de 78 articles recensés a systématiquement évalué si le sexe/le genre et la race/l’ethnicité y étaient pris en compte.
Synthèse
Bien que 59 % des études aient stratifié leurs résultats selon le sexe, moins de la moitié de ces études proposaient des explications des écarts dans les niveaux d’exposition. Dix-huit des 78 études (23 %) employaient des termes liés à la race/l’ethnicité dans leurs descriptions des participants. Sur les études ayant effectué des analyses de l’exposition par sous-groupe racial/ethnique (n=15), 8 incluaient aussi une analyse selon le sexe. Globalement, 3 des 78 articles examinés (3 %) analysaient l’exposition environnementale en fonction du sexe/du genre et de la race/de l’ethnicité.
Conclusion
L’influence du sexe/du genre et de la race/de l’ethnicité sur les niveaux d’exposition environnementale dans la population canadienne non indigène n’a pas été convenablement abordée jusqu’à maintenant.
Mots Clés: santé environnementale, femmes, santé des minorités
Footnotes
Conflict of Interest: None to declare.
References
- 1.Arbuckle TE. Are there sex and gender differences in acute exposure to chemicals in the same setting? Environ Res. 2006;101:195–204. doi: 10.1016/j.envres.2005.08.015. [DOI] [PubMed] [Google Scholar]
- 2.Messing K, Punnett L, Bond M, Alexanderson K, Pyle J, Zahm S, et al. Be the fairest of them all: Challenges and recommendations for the treatment of gender in occupational health research. Am J Ind Med. 2003;43:618–29. doi: 10.1002/ajim.10225. [DOI] [PubMed] [Google Scholar]
- 3.Johnson JL, Greaves L, Repta R. Better Science with Sex and Gender: A Primer for Health Research. Vancouver, BC: Women’s Health Research Network; 2007. [Google Scholar]
- 4.Phillips SP. Defining and measuring gender: A social determinant of health whose time has come. Int J Equity Health. 2005;4:11. doi: 10.1186/1475-9276-4-11. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 5.Clougherty JE. A growing role for gender analysis in air pollution epidemiology. Environ Health Perspect. 2010;118(2):167–76. doi: 10.1289/ehp.0900994. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 6.Silbergeld EK, Flaws JA. Environmental exposures and women’s health. Clin Obstet Gynecol. 2002;45(4):1119–28. doi: 10.1097/00003081-200212000-00019. [DOI] [PubMed] [Google Scholar]
- 7.Butter ME A w m v t e p. J Human Ecology. 2006;20(3):221–26. doi: 10.1080/09709274.2006.11905931. [DOI] [Google Scholar]
- 8.Vahter M, Berglund M, Akesson A, Liden C. Metals and women’s health. Environ Res. 2002;88:145–55. doi: 10.1006/enrs.2002.4338. [DOI] [PubMed] [Google Scholar]
- 9.Public Health Agency of Canada. Sex and Gender Based Analysis (SGBA) Ottawa, ON: Health Canada; 2009. [Google Scholar]
- 10.Haluza-Delay R. Environmental justice in Canada. Local Env. 2007;12(6):557–64. doi: 10.1080/13549830701657323. [DOI] [Google Scholar]
- 11.Chakraborty J, Maantay JA, Brender JB. Disproportionate proximity to environmental hazards: Methods, models and measurement. Am J Public Health. 2011;191(S1):27–36. doi: 10.2105/AJPH.2010.300109. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 12.Creatore MI, Moineddin R, Booth G, Manuel DH, DesMeules M, McDermott S, et al. Age- and sex-related prevalence of diabetes mellitus among immigrants to Ontario, Canada. CMAJ. 2010;182(8):2670–76. doi: 10.1503/cmaj.091551. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 13.Rahder B. Invisible sisters: Women and environmental justice in Canada. In: Agyeman J, Cole P H-, Delay R, O’Riley P, editors. Speaking for Ourselves: Environmental justice in Canada. Vancouver, BC: UBC Press; 2009. [Google Scholar]
- 14.Masuda JR, Zupancic T, Poland B, Cole D. Environmental health and vulnerable populations in Canada: Mapping an integrated equity-focused research agenda. Can Geogr. 2008;52(4):427–50. doi: 10.1111/j.1541-0064.2008.00223.x. [DOI] [Google Scholar]
- 15.Agyeman J, Cole P H-, DeLay R O, Riley P. Speaking for Ourselves: Environmental justice in Canada. Vancouver: UBC Press; 2009. [Google Scholar]
- 16.Masuda JR, Poland B, Baxter J. Reaching for environmental health justice: Canadian experiences for a comprehensive research, policy and advocacy agenda in health promotion. Health Promot Int. 2010;25(4):453–63. doi: 10.1093/heapro/daq041. [DOI] [PubMed] [Google Scholar]
- 17.Clarke DE, Colantonio A, Rhodes AE, Escobar M. Ethnicity and mental health: Conceptualization, definition and operationalization of ethnicity from a Canadian context. Chron Dis Can. 2008;28(4):128–47. [PubMed] [Google Scholar]
- 18.Krieger N A g f s e. J Epidemiol Community Health. 2001;55:693–700. doi: 10.1136/jech.55.10.693. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 19.Doull M, Runnels VE, Tudiver S, Boscoe M. Appraising the evidence: Applying sex- and gender-based analysis (SGBA) to Cochrane Systematic Reviews on cardiovascular disease. J Womens Health. 2010;19(5):997–1003. doi: 10.1089/jwh.2009.1626. [DOI] [PubMed] [Google Scholar]
- 20.Abdelouahab N, Mergler D, Takser L, Vanier C, St -Jean M, Baldwin M, et al. Gender differences in the effects of organochlorines, mercury, and lead on thyroid hormone levels in lakeside communities of Quebec (Canada) Environ Res. 2008;107(3):380–92. doi: 10.1016/j.envres.2008.01.006. [DOI] [PubMed] [Google Scholar]
- 21.Oiamo TH, Luginaah IN. Extricating sex and gender in air pollution research: A community-based study on cardinal symptoms of exposure. Int J Environ Res Public Health. 2013;10:3801–17. doi: 10.3390/ijerph10093801. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 22.Jerrett M, Buzzelli M, Burnett RT, DeLuca PF. Particulate air pollution, social confounders, and mortality in small areas of an industrial city. Soc Sci Med. 2005;60:2845–63. doi: 10.1016/j.socscimed.2004.11.006. [DOI] [PubMed] [Google Scholar]
- 23.Cole DC, Scott F, Sheeshka J, Murken EJ, Kearney J. Dietary intakes and plasma organochlorine contaminant levels among Great Lakes fish eaters. Arch Environ Health. 2002;57(5):496–509. doi: 10.1080/00039890209601443. [DOI] [PubMed] [Google Scholar]
- 24.Cole DC, Kearney J, Sanin LH, Leblanc A, Weber J. Blood mercury levels among Ontario anglers and sport-fish eaters. Environ Res. 2004;95(3):305–14. doi: 10.1016/j.envres.2003.08.012. [DOI] [PubMed] [Google Scholar]
- 25.Dosman JA, Chenard L, Rennie DC, Senthilselvan A. Reciprocal association between atopy and respiratory symptoms in fully employed female, but not male, workers in swine operations. J Agromedicine. 2009;14:270–76. doi: 10.1080/10599240902772738. [DOI] [PubMed] [Google Scholar]
- 26.Cooper GS, Wither J, Bernatsky S, Claudio JO, Clarke A, Rioux JD, Fortin PR. Occupational and environmental exposures and risk of systemic lupus erythematosus: Silica, sunlight, solvents. Rheumatology. 2010;49(11):2172–80. doi: 10.1093/rheumatology/keq214. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 27.Hu J, Mao Y, White K. Renal cell carcinoma and occupational exposures to environmental chemicals in Canada. Occup Med. 2002;52:157–64. doi: 10.1093/occmed/52.3.157. [DOI] [PubMed] [Google Scholar]
- 28.Schlehofer B, Hettinger I, Ryan P, Blettener M P-, Martin S, Little J, et al. Occupational risk factors for low grade and high grade glioma: Results from an international case control study of adult brain tumours. Int J Cancer. 2005;113:116–25. doi: 10.1002/ijc.20504. [DOI] [PubMed] [Google Scholar]
- 29.Kearney JP, Cole DC, Ferron LA, Weber J-P. Blood PCB, p,p’-DDE, and Mirex levels in Great Lakes fish and waterfowl consumers in two Ontario communities. Environ Res. 1999;80:S138–S149. doi: 10.1006/enrs.1998.3927. [DOI] [PubMed] [Google Scholar]
- 30.Reimar R, Gaertner W, Trpeski L, Johnson KC. A case-control study of occupational risk factors for bladder cancer in Canada. Cancer Cause Control. 2004;15(10):1007–19. doi: 10.1007/s10552-004-1448-7. [DOI] [PubMed] [Google Scholar]
- 31.Bushnik T, Haines D, Levallois P, Levesque J, Oostdam JV, Viau C. Lead and bisphenol A concentrations in the Canadian population. Health Rep. 2010;21(3):1–13. [PubMed] [Google Scholar]
- 32.Mays VM, Ponce NA, Washington DL, Cochran SD. Classification of race and ethnicity: Implications for public health. Annu Rev Public Health. 2003;24:83–110. doi: 10.1146/annurev.publhealth.24.100901.140927. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 33.Haines D, Murray J. Human biomonitoring of environmental chemicals - Early results of the 2007–2009 Canadian Health Measures Survey for males and females. Int J Hyg Environ Health. 2012;215:133–37. doi: 10.1016/j.ijheh.2011.09.008. [DOI] [PubMed] [Google Scholar]
- 34.Bradby H. Race, ethnicity and health: The costs and benefits of conceptualising racism and ethnicity. Soc Sci Med. 2012;75(6):955–58. doi: 10.1016/j.socscimed.2012.03.008. [DOI] [PubMed] [Google Scholar]
- 35.Lye E, Legrand M, Clarke J, Probert A. Blood total mercury concentrations in the Canadian population: Canadian Health Measures Survey Cycle 1, 2007–2009. Can J Public Health. 2013;104(3):e246–e251. doi: 10.17269/cjph.104.3772. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 36.Foster WG, Cheung AP, David K, Graves G, Jarrell J, LeBlanc A, et al. Sci Total Environ. 2012. Circulating metals and persistent organic pollutant concentrations in Canadian and non-Canadian born primiparous women from five Canadian centres: Results of a pilot biomonitoring study; pp. 435–436. [DOI] [PubMed] [Google Scholar]
- 37.Sykes LL, Walker RL, Ngwakongnwi E, Quan H. A systematic literature review on response rates across racial and ethnic populations. Can j Public Health. 2010;101(3):213–19. doi: 10.1007/BF03404376. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 38.Premji S, Duguay P, Messing K, Lippel K. Are immigrants, ethnic and linguistic minorities over-represented in jobs with a high level of compensated risk? Results from a Montreal, Canada study using census and workers’ compensation data. Am J Ind Med. 2010;53:875–85. doi: 10.1002/ajim.20860. [DOI] [PubMed] [Google Scholar]
- 39.Schoeman K, Tanaka T, Bend J, Koren G. Hair mercury levels of women of reproductive age in Ontario, Canada: Implications to fetal safety and fish consumption. J Pediatr. 2010;157(1):127–31. doi: 10.1016/j.jpeds.2010.01.020. [DOI] [PubMed] [Google Scholar]
- 40.United Nations Environment Program Global Environment Monitoring Systems (GEMS) Water Programme. Available at: https://doi.org/www.gemstat.org/ (Accessed June 5, 2014).
- 41.Statistics Canada. Census: Immigration in Canada: A Portrait of the Foreign-Born population. 2006. [Google Scholar]
- 42.Meharg AA, Williams PN, Adomako E, Lawgali Y, Deacon C, Villada A, et al. Geographical variation in total and inorganic arsenic content of polished (white) rice. Environ Sci Technol. 2009;43(5):1612–17. doi: 10.1021/es802612a. [DOI] [PubMed] [Google Scholar]
- 43.Araujo J, Beelen A, Lewis L, Robinson G, DeLaurier C, Carbajal M, et al. Lead poisoning associated with ayurvedic medications-five states, 2000–2003. MMWR Morb Mortal Wkly Rep. 2004;53(26):582–84. [PMC free article] [PubMed] [Google Scholar]
- 44.Ernst E. Toxic heavy metals and undeclared drugs in Asian herbal medicines. Trends Pharmacol Sci. 2002;23(3):136–39. doi: 10.1016/S0165-6147(00)01972-6. [DOI] [PubMed] [Google Scholar]
- 45.Gair R. Heavy metal poisoning from Ayurvedic medicines. BC Med J. 2008;50(2):105. [Google Scholar]
- 46.Environ Health Perspect. 2010.
- 47.Belova A, Greco SL, Riederer AM, Olsho LEW, Corrales MA. A method to screen U.S. environmental biomonitoring data for race/ethnicity and income-related disparity. Environ Health. 2013;12:114. doi: 10.1186/1476-069X-12-114. [DOI] [PMC free article] [PubMed] [Google Scholar]
