“…This is the fi rst study showing an association between tobacco consumption among youth and poverty in Latin America. Other studies have explored the relationship between tobacco and poverty, mainly in developed countries ( Blow et al, 2005 ;Borland, 1975 ;Doku et al, 2010 ;Harrell, Bangdiwala, Deng, Webb, & Bradley, 1998 ;Lowry, Kann, Collins, & Kolbe, 1996 ;Soteriades & DiFranza, 2003 ;Zhu, Liu, Shelton, Liu, & Giovino, 1996 ).This study has several limitations. First, an important limitation is that the GYTS does not include questions about individual-level SES , which prevented the investigation of individual-level SES as a confounder or effect modifi er.…”