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Melanie A Wakefield a Health
Research and Policy Centers, University of Illinois at Chicago, 850 West Jackson Boulevard, Chicago, IL 60607, USA, b Department of Economics,
University of Illinois at Chicago, c Robert Wood Johnson Foundation, PO Box
2316, Princeton, NJ 08543, USA, d Barker Bi-Coastal Health Consultants, 3556 Elm Drive,
Calabasas, CA 91302, USA
Correspondence to: M A Wakefield
melaniew{at}uic.edu
Objective:
To determine the relation between extent of restrictions on smoking at home, at school, and in public places and
smoking uptake and smoking prevalence among school students.
Design:
Cross sectional survey with merged records of
extent of restrictions on smoking in public places.
Setting:
United States.
Participants:
17 287 high school students.
Main outcome measures:
Five point scale of smoking
uptake; 30 day smoking prevalence.
Results:
More restrictive arrangements on smoking at home were associated with a greater likelihood of being in an earlier
stage of smoking uptake (P<0.05) and a lower 30 day prevalence (odds
ratio 0.79 (95% confidence interval 0.67 to 0.91), P<0.001). These
findings applied even when parents were smokers. More pervasive restrictions on smoking in public places were associated with a higher
probability of being in a earlier stage of smoking uptake (P<0.05) and
lower 30 day prevalence (0.91 (0.83 to 0.99), P=0.03). School smoking bans were related to a greater likelihood of being in an
earlier stage of smoking uptake (0.89 (0.85 to 0.99), P<0.05) and
lower prevalence (0.86 (0.77 to 0.94), P<0.001) only when the ban was
strongly enforced, as measured by instances when teenagers perceived
that most or all students obeyed the rule.
Conclusions:
These findings suggest that restrictions
on smoking at home, more extensive bans on smoking in public places, and enforced bans on smoking at school may reduce teenage smoking.
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