Table 1 Assessment of the associations between pollutant exposure and rate of hospitalisation and mortality in pre-pandemic and dynamic zero-COVID stages

Hospitalisation rate

 PM2.5 (lag 3d)

1.002* (1.001,1.007)

1.014* (1.010, 1.017)

 O₃ (lag 3d)

1.007* (1.005,1.009)

0.983* (0.981, 0.985)

Mortality rate

 PM2.5 (lag 1d)

0.995 (0.989, 1.001)

0.996 (0.991, 1.003)

 O₃ (lag 1d)

1.018* (1.013, 1.022)

1.012* (1.006, 1.018)