Air pollution | Hospital admission | Heterogeneity | ||
NO. | HR (95% CI) | I2 (%) | P | |
PM2.5 | 19 | 1.008 (1.005, 1.011) | 96.6 | 0.000 |
PM10 | 15 | 1.004 (1.001, 1.006) | 92.7 | 0.000 |
SO2 | 13 | 1.013 (1.007, 1.020) | 94.5 | 0.000 |
NO2 | 15 | 1.023 (1.015, 1.030) | 92.6 | 0.000 |
CO | 8 | 1.000 (1.000, 1.001) | 92.7 | 0.000 |
O3 | 15 | 1.002 (1.000, 1.003) | 80.2 | 0.000 |