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Table 5 Results of seasonal Poisson regressions of air pollutants and meteorological factors on emergency department visits

From: Association of airborne particles, protein, and endotoxin with emergency department visits for asthma in Kyoto, Japan

Variables Spring Summer Autumn Winter
Coef SE p value Coef SE p value Coef SE p value Coef SE p value
Fine particles 0.024 0.018 0.199 − 0.082 0.055 0.131 0.052 0.032 0.107 0.003 0.032 0.931
 Intercept − 29.035 37.402 0.438 − 22.254 77.335 0.774 9.183 34.969 0.793 45.921 42.385 0.279
 Temperature 0.088 0.033 0.007 0.040 0.045 0.375 0.038 0.032 0.239 0.107 0.052 0.039
 Relative humidity 0.016 0.016 0.311 − 0.021 0.043 0.621 0.016 0.019 0.419 0.036 0.029 0.214
 Wind speed 0.898 0.567 0.113 − 0.608 0.453 0.180 0.537 0.403 0.183 0.411 0.500 0.411
 Air pressure 0.026 0.036 0.477 0.027 0.079 0.736 − 0.010 0.034 0.763 − 0.048 0.041 0.245
Protein (fine particles) − 0.128 0.121 0.291 − 1.039 0.521 0.046 0.098 0.129 0.449 0.048 0.233 0.837
 Intercept − 48.966 38.962 0.209 − 53.432 80.320 0.506 11.460 34.557 0.740 49.651 46.418 0.285
 Temperature 0.119 0.039 0.002 0.011 0.047 0.822 0.038 0.034 0.252 0.107 0.051 0.035
 Relative humidity < 0.001 0.015 0.974 0.001 0.030 0.977 − 0.001 0.015 0.966 0.035 0.028 0.221
 Wind speed 0.632 0.544 0.246 − 0.505 0.394 0.200 0.262 0.359 0.465 0.367 0.502 0.465
 Air pressure 0.047 0.038 0.210 0.057 0.082 0.488 − 0.010 0.034 0.756 − 0.051 0.045 0.254
Endotoxin (fine particles) 22.987 43.993 0.601 28.411 181.928 0.876 23.465 34.868 0.501 97.331 399.535 0.808
 Intercept − 38.240 37.175 0.304 33.846 70.257 0.630 6.580 34.906 0.850 49.851 45.574 0.274
 Temperature 0.096 0.032 0.003 0.049 0.049 0.309 0.028 0.032 0.390 0.103 0.051 0.042
 Relative humidity 0.010 0.015 0.517 0.035 0.028 0.210 0.004 0.020 0.835 0.044 0.046 0.336
 Wind speed 0.732 0.552 0.185 − 0.163 0.412 0.692 0.333 0.382 0.382 0.361 0.501 0.471
 Air pressure 0.036 0.036 0.317 − 0.035 0.071 0.618 − 0.006 0.034 0.864 − 0.052 0.045 0.248
Coarse particles 0.065 0.026 0.013 0.048 0.071 0.496 0.087 0.036 0.017 0.037 0.020 0.058
 Intercept − 40.870 37.408 0.275 42.374 70.477 0.548 − 2.956 35.372 0.933 34.113 42.135 0.418
 Temperature 0.103 0.034 0.003 0.035 0.051 0.500 0.042 0.033 0.212 0.096 0.052 0.066
 Relative humidity 0.014 0.015 0.349 0.033 0.028 0.227 0.007 0.015 0.647 0.042 0.029 0.146
 Wind speed 0.909 0.555 0.101 − 0.155 0.330 0.640 0.185 0.358 0.606 0.631 0.496 0.203
 Air pressure 0.037 0.036 0.299 − 0.044 0.071 0.537 0.003 0.034 0.933 − 0.037 0.041 0.361
Protein (coarse particles) − 4.194 2.563 0.102 − 0.635 2.404 0.792 − 1.318 0.909 0.147 5.056 2.264 0.026
 Intercept − 6.415 42.314 0.879 29.896 71.928 0.678 13.038 33.558 0.698 41.434 41.091 0.313
 Temperature 0.106 0.033 0.001 0.052 0.049 0.295 0.044 0.033 0.185 0.114 0.052 0.028
 Relative humidity 0.002 0.014 0.867 0.038 0.030 0.216 < 0.001 0.015 0.983 0.036 0.028 0.205
 Wind speed 0.609 0.551 0.269 − 0.165 0.359 0.646 0.256 0.355 0.471 0.361 0.467 0.440
 Air pressure 0.006 0.041 0.892 − 0.031 0.072 0.663 − 0.012 0.033 0.716 − 0.044 0.040 0.272
Endotoxin (coarse particles) 9.069 32.095 0.778 45.832 26.900 0.088 10.432 15.789 0.509 311.199 208.761 0.136
 Intercept − 34.800 38.148 0.362 18.278 70.654 0.796 9.706 34.671 0.780 56.880 44.515 0.201
 Temperature 0.094 0.035 0.007 0.019 0.049 0.706 0.018 0.037 0.619 0.059 0.058 0.314
 Relative humidity 0.006 0.014 0.677 0.022 0.028 0.434 − 0.005 0.015 0.731 0.046 0.029 0.112
 Wind speed 0.657 0.545 0.228 − 0.315 0.362 0.384 0.243 0.359 0.498 0.254 0.485 0.600
 Air pressure 0.033 0.037 0.370 − 0.018 0.071 0.799 − 0.008 0.034 0.813 − 0.059 0.043 0.171
  1. Coef regression coefficient, SE standard error of the regression
  2. Statistically significant, p < 0.05
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Environmental Health and Preventive Medicine

ISSN: 1347-4715

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