Table 2.  Comparison of the effects of totally smoke-free versus partially smoke-free workplaces* Study Setting Consumption/smoker Prevalence (%) Smoke-free v unrestricted Partially smoke-free v unrestricted Smoke-free v unrestricted Partially smoke-free v unrestricted Woodruff, 199348 1990 statewide survey of California 3.3 2.8 6.3% 3.5% Glasgow, 199746 1993 study of 22 North American communities 2.8 1.2 NR NR Farelly, 199945 1992-93 survey of US workers 2.7 1.5 5.7% 2.6% NR: Not reported. * Totally smoke-free workplaces allow no smoking inside buildings, partially smoke-free workplaces allow smoking in designated areas. Cigarettes per day.