Differential impact of local and federal smoke-free legislation in Mexico: a longitudinal study among adult smokers.
OBJECTIVE
To assess the impact of Mexico City and federal smoke-free legislation on secondhand tobacco smoke (SHS) exposure and support for smoke-free laws.


METHODS
Pre- and post-law data were analyzed from a cohort of adult smokers who participated in the International Tobacco Control (ITC) Policy Evaluation Suvey in four Mexican cities. For each indicator, we estimated prevalence, changes in prevalence, and between-city differences in rates of change.


RESULTS
Self-reported exposure to smoke-free media campaigns generally increased more dramatically in Mexico City. Support for prohibiting smoking in regulated venues increased overall, but at a greater rate in Mexico City than in other cities. In bars and restaurants/cafés, self-reported SHS exposure had significantly greater decreases in Mexico City than in other cities; however, workplace exposure decreased in Tijuana and Guadalajara, but not in Mexico City or Ciudad Juárez.


CONCLUSIONS
Although federal smoke-free legislation was associated with important changes smoke-free policy impact, the comprehensive smoke-free law in Mexico City was generally accompanied by a greater rate of change.
Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA. thrasher@mailbox.sc.edu
James F
JF
Thrasher
Kamala
K
Swayampakala
Edna
E
Arillo-Santillán
Ernesto
E
Sebrié
Katrina M
KM
Walsemann
Matteo
M
Bottai
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008800:Mexico; D008875:Middle Aged; D012907:Smoking / Q000331:legislation & jurisprudence*; D000074606:Smoking Prevention; D014028:Tobacco Smoke Pollution / Q000331:legislation & jurisprudence* / Q000517:prevention & control*; D014504:Urban Health; D055815:Young Adult
D014028:Tobacco Smoke Pollution
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