Karina de Cássia Braga Ribeiro|Patricia A. Buffler|Catherine Metayer
Socioeconomic status and childhood acute lymphocytic leukemia incidence in São Paulo, Brazil
Faculdade de Ciências Médicas da Santa Casa de São Paulo|University of California, Berkeley|University of California, Berkeley
abstract investigate association childhood ses collected data 507 children aged 014 years diagnosed 1997 2002 populationbased cancer registry paulo brazil covering 96 districts child assigned ses category based district residence diagnosis four ses categories created high low based social exclusion index sei includes following indicators poverty employment inequality education violence using census data cases also classified quintiles according percentage households 7 persons agespecific agestandardized incidence rates calculated using 1960 world standard population ageadjusted incidence rate 368100000 males 287100000 females children living areas lowest ses presented significant lower risk compared living wealthiest districts rate ratio rr 034 95 confidence interval ci 028044 lower incidence rates childhood also found areas high percentages households 7 persons 57 compared areas 22 rr 032 95 ci 025043 strong correlation sei crowding rho 095 p lt 0001 populationbased attributes ses household size may useful surrogate markers early exposure childhood infections found decrease risk 2008 wileyliss inc