Fig. 6

The 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 levels
The 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 levels