The overall lag patterns (A) and cumulative exposure-response relationship curves (B) for the associations between PM_2.5 and PM_2.5–10 and hospital admissions for total respiratory diseases over lags of 0 to 4 days. The associations are presented as percentage change of hospital admissions associated with an interquartile range increase in PM_2.5 and PM_2.5–10; A: overall lag patterns; B: exposure-response relationship curves. PM_2.5, particulate matter with an aerodynamic diameter of 2.5 μm or less; PM_2.5–10, particulate matter with an aerodynamic diameter of between 2.5 μm and 10 μm