Figure 1From: Perceived annoyance and asthmatic symptoms in relation to vehicle exhaust levels outside home: a cross-sectional study The expected proportion of people highly annoyed from vehicle exhaust at different levels of exposure. Highly annoyed is defined as reporting the degree of annoyance from vehicle exhausts outside home as 9 or more on a scale from 1 to 11. The exposure is based on modelled levels of NO2 outside each participants home.Back to article page