Table 3 Analysis of relative risk for EMS-treated asthma attacks per IQR increase in single pollutant

NO₂ (ppb)

0 Day*

8

1.12

1.07-1.17

1.08

1.00-1.16

1.14

1.08-1.20

1 Day

1.04

1.00-1.09

1.02

0.95-1.10

1.05

1.00-1.11

2 Day

1.03

0.99-1.07

1.06

0.99-1.13

1.01

0.96-1.06

3 Day

1.02

0.98-1.06

1.05

0.99-1.12

1.00

0.95-1.05

0 to 2

1.10

1.04-1.16

1.07

0.98-1.17

1.10

1.03-1.18

CO (ppb)

0 Day*

155

1.05

1.02-1.08

1.03

0.98-1.08

1.06

1.03-1.10

1 Day

1.03

1.00-1.05

1.00

0.95-1.05

1.04

1.00-1.07

2 Day

1.02

0.99-1.04

1.03

0.98-1.08

1.01

0.97-1.04

3 Day

1.01

0.98-1.04

1.03

0.99-1.08

1.00

0.96-1.03

0 to 2

1.04

1.01-1.08

1.01

0.96-1.07

1.06

1.01-1.10

O₃ (8 hour) (ppb)

0 Day

20

1.04

1.01-1.07

1.01

0.98-1.05

1.11

1.04-1.18

1 Day

1.06

1.03-1.09

1.02

0.99-1.06

1.16

1.09-1.24

2 Day

1.05

1.01-1.08

1.03

0.99-1.07

1.07

1.01-1.15

3 Day

1.01

0.98-1.04

1.01

0.98-1.05

0.99

0.93-1.06

0 to 2*

1.07

1.03-1.11

1.03

0.99-1.08

1.17

1.08-1.27

PM_2.5 (μg/m³)

0 Day*

6

1.02

0.99-1.05

1.03

0.99-1.06

1.00

0.95-1.06

1 Day

1.02

0.99-1.05

1.03

0.99-1.06

1.00

0.95-1.05

2 Day

1.04

1.01-1.07

1.03

1.00-1.07

1.06

1.01-1.12

3 Day

1.03

1.00-1.06

1.03

1.00-1.07

1.01

0.96-1.06

0 to 2

1.04

1.00-1.07

1.04

0.99-1.08

1.03

0.97-1.10

SO₂ (ppb)

0 Day

2

1.03

0.97-1.08

1.03

0.94-1.12

1.02

0.96-1.09

1 Day

0.99

0.94-1.05

0.98

0.90-1.07

1.00

0.93-1.06

2 Day

1.02

0.97-1.07

1.03

0.95-1.12

1.00

0.94-1.07

3 Day

0.99

0.94-1.04

1.03

0.94-1.12

0.97

0.91-1.03

0 to 2

1.02

0.94-1.10

1.00

0.89-1.13

1.01

0.92-1.12