Figure 1.

Boxplot of the change in respiratory and sensory symptoms by initial attitude for Scotland (White) and England (Grey). Top: Respiratory symptoms; Bottom: Sensory symptoms. The dotted line on each box shows the mean change in number of symptoms, while the black points are outliers.

MacCalman et al. BMC Public Health 2012 12:324   doi:10.1186/1471-2458-12-324
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