title: Addressing equity in interventions to reduce air pollution in urban areas: a systematic review.
abstract: OBJECTIVE
  We did a systematic review to assess quantitative studies investigating the association between interventions aiming to reduce air pollution, health benefits and equity effects.
  
  
  METHODS
  Three databases were searched for studies investigating the association between evaluated interventions aiming to reduce air pollution and heath-related benefits. We designed a two-stage selection process to judge how equity was assessed and we systematically determined if there was a heterogeneous effect of the intervention between subgroups or subareas.
  
  
  RESULTS
  Of 145 identified articles, 54 were reviewed in-depth with eight satisfying the inclusion criteria. This systematic review showed that interventions aiming to reduce air pollution in urban areas have a positive impact on air quality and on mortality rates, but the documented effect on equity is less straightforward.
  
  
  CONCLUSIONS
  Integration of equity in evidence-based public health is a great challenge nowadays. In this review we draw attention to the importance of considering equity in air pollution interventions. We also propose further methodological and theoretical challenges when assessing equity in interventions to reduce air pollution and we present opportunities to develop this research area.
authors.affiliation: Département de médecine sociale et préventive, Université de Montréal, Montreal, Canada, benmarhnia.tarik@ouranos.ca.
authors.forename: Tarik
authors.initials: T
authors.lastname: Benmarhnia
authors.forename: Lynda
authors.initials: L
authors.lastname: Rey
authors.forename: Yuri
authors.initials: Y
authors.lastname: Cartier
authors.forename: Christelle M
authors.initials: CM
authors.lastname: Clary
authors.forename: Séverine
authors.initials: S
authors.lastname: Deguen
authors.forename: Astrid
authors.initials: A
authors.lastname: Brousselle
mesh_terms: D000367:Age Factors; D000397:Air Pollution / Q000517:prevention & control*; D004781:Environmental Exposure / Q000517:prevention & control*; D054624:Health Status Disparities; D006801:Humans; D009026:Mortality; D011634:Public Health; D012737:Sex Factors; D014505:Urban Population