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RESEARCH PRODUCT

Childhood leukemia and residential proximity to industrial and urban sites

Antonio Morales-pigaIbon Tamayo-uriaRebeca RamisGonzalo López-abentePablo Fernández-navarroElena Pardo RomagueraJavier García-pérezDiana Gómez-barroso

subject

MaleChildhood leukemiaAdolescentCase–control studyPopulationIndustrial pollutionChildhood leukemiaLogistic regressionUrban pollutionBiochemistryResidence CharacteristicsEnvironmental healthmedicineResidential proximityHumansRisk factoreducationChildGeneral Environmental Scienceeducation.field_of_studyLeukemiaAbsolute risk reductionUrban HealthOdds ratiomedicine.diseaseLeukemiaSpainCase-Control StudiesResidenceFemale

description

BACKGROUND: Few risk factors for the childhood leukemia are well established. While a small fraction of cases of childhood leukemia might be partially attributable to some diseases or ionizing radiation exposure, the role of industrial and urban pollution also needs to be assessed. OBJECTIVES: To ascertain the possible effect of residential proximity to both industrial and urban areas on childhood leukemia, taking into account industrial groups and toxic substances released. METHODS: We conducted a population-based case-control study of childhood leukemia in Spain, covering 638 incident cases gathered from the Spanish Registry of Childhood Tumors and for those Autonomous Regions with 100% coverage (period 1990-2011), and 13,188 controls, individually matched by year of birth, sex, and autonomous region of residence. Distances were computed from the respective subject's residences to the 1068 industries and the 157 urban areas with ≥10,000 inhabitants, located in the study area. Using logistic regression, odds ratios (ORs) and 95% confidence intervals (95%CIs) for categories of distance to industrial and urban pollution sources were calculated, with adjustment for matching variables. RESULTS: Excess risk of childhood leukemia was observed for children living near (≤2.5 km) industries (OR=1.31; 95%CI=1.03-1.67) - particularly glass and mineral fibers (OR=2.42; 95%CI=1.49-3.92), surface treatment using organic solvents (OR=1.87; 95%CI=1.24-2.83), galvanization (OR=1.86; 95%CI=1.07-3.21), production and processing of metals (OR=1.69; 95%CI=1.22-2.34), and surface treatment of metals (OR=1.62; 95%CI=1.22-2.15) - , and urban areas (OR=1.36; 95%CI=1.02-1.80). CONCLUSIONS: Our study furnishes some evidence that living in the proximity of industrial and urban sites may be a risk factor for childhood leukemia. This study was funded by Spain’s Health Research Fund (Fondode Investigación Sanitaria–FIS 12/01416 and FIS CP11/00112). Sí

yearjournalcountryeditionlanguage
2015-07-01
10.1016/j.envres.2015.05.014http://hdl.handle.net/20.500.12105/7817