Fig. 1From: Association of exposure to hydrocarbon air pollution with the incidence of atopic dermatitis in childrenThe cumulative incidence of atopic dermatitis in participants exposed to quartile daily average quartile concentrations of (A) total hydrocarbon (THC), (B) non-methane hydrocarbons (NMHC), and (C) methane (CH4). First quartile (solid line), first quartile to second quartile (dashed line), second quartile to third quartile (dotted line), ≧ third quartile concentration (dot dash line)Back to article page