Canadian study links exposure to ultrafine particle air pollution to brain cancer
Green Car Congress
NOVEMBER 18, 2019
million adults included in multiple cycles of the Canadian Census Health and Environment Cohorts (1991, 1996, 2001, and 2006). They followed cohort members for malignant brain tumors between 2001 and 2016; Cox proportional hazards models (stratified by age, sex, immigration status, and census cycle) were used to estimate hazard ratios (HRs) adjusting for fine particle mass concentrations (PM 2.5 ), nitrogen dioxide (NO 2 ), and various sociodemographic factors.