Table 3 |
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|
Lagged Day Associations of ED Visits with Ozone and Pollen. |
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| Visits 1–17 yrs |
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|
|
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| Ozone |
Tree Pollen |
Grass Pollen |
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|
|
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| Lag (days) |
Mean % Change in Daily Visits per Unit |
T-test p-value |
Mean % Change in Daily Visits per Unit |
T-test p-value |
Mean % Change in Daily Visits per Unit |
T-test p-value |
|
|
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| 0 |
1 (-0.1, 2.1) |
0.078 |
0.5 (0, 1.1) |
0.068 |
0.7 (-1.8, 3.1) |
0.602 |
| 1 |
0.1 (-1, 1.2) |
0.879 |
0.4 (-0.2, 1) |
0.202 |
1.9 (-0.4, 4.3) |
0.112 |
| 2 |
-0.2 (-1.3, 0.9) |
0.724 |
0.5 (-0.1, 1.1) |
0.105 |
2.3 (-0.1, 4.7) |
0.056 |
| 3 |
0.3 (-0.8, 1.5) |
0.572 |
0.2 (-0.4, 0.8) |
0.492 |
2.6 (0.3, 5) |
0.030 |
| 4 |
0.2 (-0.9, 1.3) |
0.754 |
0.2 (-0.4, 0.9) |
0.441 |
-0.4 (-2.9, 2.3) |
0.787 |
|
|
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| Visits 5–12 yrs |
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|
|
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| Ozone |
Tree Pollen |
Grass Pollen |
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|
|
||||||
| Lag (days) |
Mean % Change in Daily Visits per Unit |
T-test p-value |
Mean % Change in Daily Visits per Unit |
T-test p-value |
Mean % Change in Daily Visits per Unit |
T-test p-value |
|
|
||||||
| 0 |
3.2 (1.4, 5) |
0.000 |
1.8 (0.9, 2.6) |
0.0001 |
1.6 (-2, 5.4) |
0.378 |
| 1 |
1.9 (0.2, 3.7) |
0.030 |
1.2 (0.4, 2.1) |
0.005 |
3.5 (0.1, 7.1) |
0.046 |
| 2 |
2.3 (0.6, 4.1) |
0.009 |
1.5 (0.7, 2.4) |
0.0002 |
4.3 (0.9, 7.9) |
0.013 |
| 3 |
2.8 (1.1, 4.6) |
0.002 |
1.1 (0.3, 2) |
0.01 |
5.5 (2.2, 9) |
0.001 |
| 4 |
3.3 (1.6, 5.1) |
0.000 |
1.1 (0.2, 2) |
0.016 |
3.1 (-0.5, 6.8) |
0.088 |
|
|
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|
The top and bottom tables are for the 1–17 yr old and 5–12 yr old age groups, respectively. The mean % change in daily visits in these tables is per unit 0.01 ppm increase in ozone, 100 grains m-3 increase in tree pollen, and 10 grains m-3 increase in grass pollen. |
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|
Babin et al. Environmental Health 2007 6:9 doi:10.1186/1476-069X-6-9 |
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