13. Association of environmental tobacco smoke exposure with socioeconomic status in a population of 7725 New Zealanders (1998)
Gary Whitlock, Stephen MacMahon, Stephen Vander Hoorn, Peter Davis, Rodney Jackson, Robyn Norton
The objective of the survey is test the hypothesis that environmental tobacco smoke (ETS) exposure is inversely associated with socioeconomic status. 7725 non-smoking adults took part (volunteer sample of a multi-industry workforce, n = 5564; and a random sample of urban electoral rolls, n = 2161), including 5408 males; mean age 45 years.