Fig. 6From: Impact of ambient fine particulate matter (PM2.5) exposure on the risk of influenza-like-illness: a time-series analysis in Beijing, ChinaThe log relative risk of ILI in association with PM2.5 when PM2.5 was set as 100 μg/m 3 to 500 μg/m 3 at an increment of 50 μg/m 3, by age groups, when all the other covariates were held at their mean levelsBack to article page