Table 3 Percentage increase (estimates and 95% CI) in hospital stay associated with10-μg/m3 increase in NO2 and O3 concentrations in different lag days and moving average days in 6 Sichuan cities
lag days | NO2 | O3 |
|---|---|---|
lag0 | 0.73(−3.80, 5.27) | −0.71(− 1.69, 0.27) |
lag1 | 0.21(− 1.98, 2.39) | − 0.42(− 1.03, 0.19) |
lag2 | − 0.44(− 2.60, 1.72) | 0.13(− 0.57, 0.82) |
lag3 | − 0.93(− 3.20, 1.34) | 0.67 (0.05, 1.29) |
lag4 | − 1.74(− 3.80, 0.32) | 0.72 (0.05, 1.40)a |
lag5 | 0.07(−1.98, 2.12) | 0.17(− 0.35, 0.68) |
lag6 | 0.51(−1.52, 2.53) | 0.37(− 0.14, 0.88) |
lag7 | 0.21(−2.00, 2.42) | 0.73 (0.22, 1.23) |
lag01 | 0.05(−4.14, 4.23) | −0.79(−1.68, 0.09) |
lag02 | 0.04(−3.63, 3.71) | −0.51(−1.40, 0.39) |
lag03 | −0.04(−3.63, 3.54) | 0.15(− 0.88, 1.17) |
lag04 | − 0.68(− 3.82, 2.47) | 0.60(− 0.55, 1.75) |
lag05 | − 0.74(− 4.10, 2.62) | 0.65(− 0.47, 1.77) |
lag06 | −0.79(− 4.36, 2.78) | 0.70(− 0.32, 1.72) |