Public opinion and smoke-free laws.

Public support for Lexington-Fayette County, Kentucky's smoke-free law, perception of health risks from exposure to secondhand smoke (SHS), smoking behaviors, and frequency of visiting restaurants, bars, and entertainment venues were assessed pre- and post-law. Two cohorts of noninstitutionalized adults (N = 2,146) were randomly selected and invited to participate in a 10- to 15-min telephone survey. Public support for the smoke-free law increased from 56% to 63%, and respondents were 1.3 times more likely to perceive SHS exposure as a health risk after the law took effect. Although adult smoking and home smoking policy did not change post-law, adults frequented public venues at least as much as before the law. Lexington adults favored the smoke-free legislation despite living in a traditionally protobacco climate. The smoke-free law acted as a public health intervention as it increased perception of risk of heart disease and cancer from SHS exposure.