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FIGURE 1—— Relationship between number of environmental factors (bedroom heating, recent bedroom painting, absence of bedroom carpeting) and potentiation of composite bedding–wheezing effect by bedding combinations BC0, BC1, and BC2.
Note. The reference category, bedding combination 0 (BC0), represented no use of synthetic items or sheepskin. Bedding combination 1 (BC1) comprised 1 synthetic item only (n = 279), 1 sheepskin only (n = 121), or 1 synthetic item and 1 sheepskin (n = 113). Bedding combination 2 (BC2) comprised 2 or more synthetic items without sheepskin (n = 57) or with sheepskin (n = 14). The difference in effect for potentiation of the BC1–wheezing effect from 0 to 2 or more of the environmental factors was P = .017. The difference in effect for potentiation of the BC2–wheezing effect from 0 to 2 or more of the environmental factors was P = .012. OR = odds ratio.
Copyright © 2008 by the American Public Health Association
