Table 4 Odds ratios and 95% confidence intervals of asthma hospitalization per unit increase in each air pollutant

0.980 (0.954, 1.007)

0.989 (0.950, 1.029)

0.962 (0.927, 0.999)

1.041 (1.013, 1.070)

1.045 (1.003, 1.088)

1.042 (1.003, 1.082)

0.995 (0.966, 1.025)

1.001 (0.959, 1.046)

0.981 (0.941, 1.023)

1.024 (0.969, 1.082)

1.021 (0.948, 1.099)

0.957 (0.876, 1.045)

1.005 (0.948, 1.066)

1.023 (0.946, 1.105)

0.939 (0.854, 1.032)

0.989 (0.933, 1.047)

0.950 (0.882, 1.024)

1.006 (0.914, 1.108)

1.008 (0.930, 1.093)

0.960 (0.840, 1.097)

0.976 (0.878, 1.084)

1.112 (1.022, 1.209)

1.043 (0.914, 1.190)

1.065 (0.950, 1.194)

1.043 (0.954, 1.140)

1.080 (0.937, 1.245)

0.975 (0.868, 1.094)

0.965 (0.677, 1.376)

1.469 (0.835, 2.585)

0.503 (0.312, 0.811)

1.273 (0.900, 1.802)

1.028 (0.597, 1.770)

0.994 (0.620, 1.594)

1.002 (0.693, 1.447)

1.255 (0.714, 2.206)

0.689 (0.420, 1.129)

0.977 (0.944, 1.012)

0.971 (0.922, 1.023)

0.987 (0.943, 1.033)

1.032 (0.993, 1.074)

1.050 (0.993, 1.109)

1.068 (1.008, 1.132)

0.977 (0.934, 1.022)

0.985 (0.930, 1.043)

0.965 (0.891, 1.044)

1.034 (0.962, 1.111)

1.006 (0.921, 1.100)

0.908 (0.773, 1.066)

1.017 (0.943, 1.098)

1.009 (0.918, 1.108)

1.013 (0.853, 1.203)

0.993 (0.923, 1.068)

0.939 (0.860, 1.027)

1.040 (0.869, 1.244)

1.047 (0.924, 1.186)

0.898 (0.748, 1.077)

1.014 (0.809, 1.272)

1.128 (0.991, 1.283)

1.042 (0.870, 1.249)

1.189 (0.933, 1.516)

1.042 (0.913, 1.189)

1.037 (0.861, 1.249)

1.059 (0.822, 1.365)

1.034 (0.628, 1.702)

2.434 (1.161, 5.103)

0.442 (0.211, 0.924)

0.755 (0.466, 1.223)

0.566 (0.273, 1.172)

0.480 (0.232, 0.991)

1.177 (0.706, 1.962)

1.587 (0.757, 3.326)

0.784 (0.335, 1.834)