The results of a recent study indicate that the national prevalence of smoke-free homes in the United States (US) has increased from 43% in the early 1990s to 83% at the start of the current decade. The authors of the study hypothesize that the increase in smoke-free homes may be a byproduct of state and local laws prohibiting smoking in public places and places of work, as well as a result of the overall decline in smoking in the US.
MMWR, September 2014