Determinants and consequences of smoke-free homes: findings from the International Tobacco Control (ITC) Four Country Survey

Tob Control. 2006 Jun;15 Suppl 3(Suppl 3):iii42-50. doi: 10.1136/tc.2005.012492.

Abstract

Objective: To report on prevalence, trends and determinants of smoke-free home policies in smokers' homes in different countries and to estimate the effects of these policies on smoking cessation.

Design: Two waves of the International Tobacco Control (ITC) Four Country Survey (ITC-4), a cohort survey of smokers conducted by telephone. Wave 1 was conducted in October/December 2002 with broadly representative samples of over 2000 adult (>or= 18 years) cigarette smokers in each of the following four countries: Canada, the United States, the United Kingdom, and Australia, 75% of whom were followed up at Wave 2 on average seven months later.

Key measures: Levels of smoking restrictions in homes (both waves).

Results: Australian smokers were most likely to live in smoke-free homes and UK smokers least likely (34% v 15% at Wave 1). Levels of smoke-free homes increased between waves. Logistic regressions indicated that the main independent predictors of smokers reporting smoke-free homes or implementation of a smoke-free policy between waves included household factors such as having a child, particularly a young child, and having other non-smoking adults in the household. Positive attitudes to smoke-free public places and/or reported presence of smoke-free public places were independent predictors of having or implementing smoke-free homes, supporting a social diffusion model for smoking restrictions. Intentions to quit at Wave 1 and quitting activity between survey waves were associated with implementing bans between Waves 1 and 2. Presence of bans at Wave 1 was associated with significantly greater proportions of quit attempts, and success among those who tried at Wave 2. There was no significant interaction between the predictive models and country.

Conclusions: Smoke-free public places seem to stimulate adoption of smoke-free homes, a strategy associated with both increased frequency of quit attempts, and of the success of those attempts.

Publication types

  • Multicenter Study
  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Aged
  • Australia
  • Canada
  • Cross-Cultural Comparison
  • Health Surveys
  • Housing / statistics & numerical data*
  • Humans
  • Middle Aged
  • Smoking / legislation & jurisprudence
  • Smoking Cessation / methods*
  • Smoking Prevention*
  • Social Control, Informal
  • Tobacco Smoke Pollution / legislation & jurisprudence
  • Tobacco Smoke Pollution / prevention & control*
  • United Kingdom
  • United States

Substances

  • Tobacco Smoke Pollution