Table 4 Percent increase in cardiac visits (95% confidence interval) for specified change in pollutant concentration.

0

0.7

2.1 (0.0, 4.2)*

3.8 (0.7, 6.9)

-2.7 (-5.8, 0.5)

1

ppm

1.6 (-0.5, 3.7)

2.8 (-2.1, 8.0)

-4.0 (-10.1, 2.5)

2

-0.2 (-2.2, 1.8)

1.7 (-2.7, 6.2)

-2.5 (-8.4, 3.8)

0

18.4

2.6 (0.2, 5.0)

4.7 (1.2, 8.4)

-1.3 (-4.1, 1.5)

1

ppb

2.7 (0.2, 5.3)

2.8 (-1.3, 7.1)

-0.9 (-3.8, 2.1)

2

0.7 (-1.6, 3.1)

1.9 (-3.1, 7.1)

0.3 (-2.6, 3.3)

0

18.4

-3.4 (-7.8, 1.3)

-1.2 (-6.5, 4.5)

-1.7 (-6.6, 3.4)

1

ppb

-3.0 (-5.9, 0.0)†

-0.5 (-4.4, 3.6)

2.0 (-3.7, 7.9)

2

-0.3 (-4.0, 3.5)

2.6 (-1.4, 6.7)

1.5 (-4.7, 8.2)

0

20.6

0.0 (-2.1, 2.2)

9.3 (0.8, 18.4)

-0.1 (-5.9, 6.1)

1

μg/m³

1.9 (-0.3, 4.1)

0.4 (-2.8, 3.6)

-0.9 (-3.4, 1.6)

2

-0.3 (-2.5, 1.8)

-0.1 (-3.2, 3.0)

2.1 (-4.0, 8.5)

0

8.2

2.0 (-1.3, 5.5)

6.5 (0.1, 13.4)

-0.8 (-3.1, 1.5)

1

μg/m³

1.1 (-2.0, 4.3)

-0.1 (-2.8, 2.7)

0.0 (-2.3, 2.3)

2

0.9 (-1.0, 2.8)

-0.4 (-3.0, 2.3)

0.0 (-2.3, 2.3)

0

5.1

1.7 (-0.2, 3.5)

0.9 (-2.8, 4.7)

-0.7 (-3.1, 1.7)

1

ppb

2.1 (0.2, 4.0)

1.5 (-1.0, 4.1)

0.4 (-3.3, 4.3)

2

0.0 (-2.3, 2.4)

0.8 (-1.6, 3.3)

-2.6 (-4.8, -0.3)