Table 1 Descriptive statistics of participants in Sub-study 1 and Sub-study 2: Texas, United States, 2007 (sub-study 1) and Indiana, United States, 2009 (Sub-study 2)

Age

(15.64)

(4.51)

 Male

(46.58)

(52.00)

 Female

(53.42)

(48.00)

 Non-Hispanic white

(50.79)

(83.51)

 Others

(49.21)

(16.49)

Intention^a

(1.63)

(2.37)

Attitude^a

(1.23)

(1.39)

Subjective norm^a

(1.04)

(1.87)

Perceived behavioral control^a

(1.56)

(2.11)

Number of smokers among 5 closest friends

(1.75)

(1.31)

Extent of agreement with regulating of smoking in public places^a

(1.32)

(1.21)

Extent of agreement with increasing taxes on cigarettes^a

(1.14)

(1.21)

 Comprehensive smoke-free air law (n, %)

 Living in a city with comprehensive smoke-free air law

(49.62)

(68.87)

 Living in a city without comprehensive smoke-free air law

(50.38)

(31.13)