Table 3 Ordinal logistic regression of CO poisoning admission by meteorological and environmental factors in total patients

Mean temperature, °C

−0.193

0.015

0.82 (0.80, 0.85)

< 0.001

Mean wind speed, m/s

−0.228

0.133

0.80 (0.54, 1.06)

0.086

24-h temperature change, °C

0.221

0.034

1.25 (1.18, 1.31)

< 0.001

CO, mg/m³

1.25

0.337

3.48 (2.82, 4.14)

< 0.001

SO₂, ug/m³

−0.018

0.009

0.98 (0.96, 1.00)

0.058

O₃8h, ug/m³

0.0008

0.003

1.00 (1.00, 1.01)

0.766

 1|2

−4.12

0.595

–

< 0.001

 2|3

−2.93

0.584

–

< 0.001

 3|4

−1.98

0.576

–

< 0.001

 4|5

−0.92

0.576

–

0.108