Figure 7: Staff exposure levels to nicotine indicated by personal badges worn during their work shift. Nursing homes nos. 1 and 2 were nonsmoking control nursing homes. Personal monitor results were not available for nursing home nos. 2, 3, 5, 7, and 20 due to issues with the filter paper. Nursing home no. 8 had very low staff exposure levels of <0.02 μg/m3.