Table 4. Association between Asian dust and emergency department visits by respiratory diseases among preschool children in the basic, single-pollutant, and multi-pollutant models.
| Basic model | Single-pollutant model (Basic model+single pollutant) Adding to basic model, one air pollutant was adjusted |
Multi-pollutant model (Single-pollutant model+other pollutant) Adding to basic model, two air pollutants were adjusted |
Adding to basic model |
|||||
| Adjusted by temperature+humidity |
SO2 | NO2 | Ox | SO2+NO2 | SO2+Ox | NO2+Ox | Spherical Extinction Coefficients |
|
| OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | |
| Lag 0 | 1.245 (1.129–1.374) | 1.217 (1.099–1.347) | 1.255 (1.137–1.385) | 1.256 (1.129–1.396) | 1.216 (1.099–1.347) | 1.242 (1.117–1.382) | 1.250 (1.124–1.390) | 1.335 (1.202–1.483) |
| Lag 1 | 1.312 (1.186–1.451) | 1.284 (1.156–1.426) | 1.334 (1.204–1.477) | 1.337 (1.198–1.492) | 1.295 (1.165–1.439) | 1.320 (1.182–1.475) | 1.339 (1.200–1.495) | 1.420 (1.276–1.580) |
| Lag 2 | 1.272 (1.148–1.410) | 1.242 (1.117–1.382) | 1.310 (1.178–1.456) | 1.281 (1.148–1.429) | 1.273 (1.143–1.418) | 1.264 (1.132–1.411) | 1.301 (1.165–1.453) | 1.335 (1.201–1.484) |
| Lag 3 | 1.090 (0.980–1.213) | 1.069 (0.960–1.190) | 1.103 (0.990–1.229) | 1.080 (0.969–1.204) | 1.085 (0.973–1.209) | 1.072 (0.961–1.195) | 1.090 (0.977–1.216) | 1.102 (0.990–1.227) |
| Lag 4 | 0.991 (0.891–1.102) | 0.985 (0.885–1.095) | 0.996 (0.895–1.108) | 0.982 (0.882–1.094) | 0.994 (0.893–1.106) | 0.986 (0.885–1.098) | 0.986 (0.886–1.098) | 0.997 (0.896–1.109) |
| Lag 5 | 0.789 (0.708–0.880) | 0.792 (0.710–0.884) | 0.791 (0.710–0.883) | 0.791 (0.709–0.882) | 0.799 (0.716–0.892) | 0.792 (0.710–0.884) | 0.795 (0.713–0.887) | 0.785 (0.704–0.875) |
| Lag 01 | 1.235 (1.132–1.348) | 1.210 (1.103–1.327) | 1.249 (1.144–1.364) | 1.258 (1.142–1.386) | 1.213 (1.106–1.330) | 1.242 (1.126–1.369) | 1.256 (1.140–1.383) | 1.320 (1.203–1.448) |
| Lag 02 | 1.144 (1.054–1.241) | 1.111 (1.018–1.214) | 1.161 (1.068–1.262) | 1.153 (1.050–1.265) | 1.120 (1.025–1.223) | 1.133 (1.030–1.245) | 1.155 (1.052–1.267) | 1.210 (1.109–1.321) |
| Lag 03 | 1.062 (0.983–1.147) | 1.024 (0.943–1.112) | 1.074 (0.993–1.163) | 1.049 (0.962–1.145) | 1.032 (0.950–1.122) | 1.031 (0.943–1.126) | 1.052 (0.964–1.148) | 1.101 (1.015–1.194) |
| Lag 04 | 1.052 (0.978–1.132) | 1.019 (0.943–1.102) | 1.063 (0.987–1.145) | 1.039 (0.959–1.127) | 1.027 (0.950–1.110) | 1.025 (0.944–1.112) | 1.042 (0.961–1.130) | 1.082 (1.002–1.168) |
| Lag 05 | 1.003 (0.934–1.078) | 0.970 (0.899–1.046) | 1.012 (0.940–1.089) | 0.985 (0.912–1.064) | 0.978 (0.906–1.055) | 0.969 (0.896–1.049) | 0.990 (0.916–1.070) | 1.020 (0.947–1.098) |
CI, confidence interval; OR, odds ratio.