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Model Results. Rate ratios (95% confidence intervals) from the models assessing interactions of the weather and pollution variables with period (outbreak vs non-outbreak) within the best single pollutant model. |
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| Best single pollutant model variables |
Period by variable interaction terms |
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| Model |
Minimum air temperature (lag 3 days) |
Maximum relative humidity (lag 3 days) |
Mean solar radiation (no lag) |
Minimum PM10 (lag 3 days) |
Period |
Interaction variable |
Rate ratio in outbreak |
Rate ratio in non-outbreak |
|
|
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| Best single pollutant model |
0.86 (0.77 – 0.96) |
1.09 (1.05 – 1.14) |
0.81 (0.59 – 1.11) |
1.05 (1.01 – 1.09) |
NA |
NA |
NA |
NA |
| Period by mean solar radiation (no lag) |
0.86 (0.77 – 0.96) |
1.09 (1.04 – 1.14) |
0.97 (0.86–1.1) |
1.05 (1.01 – 1.09) |
0.80 (0.51 – 1.23) |
1.48 (1.04 – 2.1) |
1.44 (1.00 – 2.07) |
0.97 (0.86–1.10) |
| Period by max ozone (lag 1 day) |
0.87 (0.78 – 1.97) |
1.09 (1.04 – 1.14) |
1.01 (0.89 – 1.14) |
1.05 (1.01 – 1.09) |
0.86 (0.58 – 1.27) |
1.13 (1.01 – 1.27) |
1.13 (1.01 – 1.26) |
1.00 (0.97–1.03) |
| Period by Max ozone (lag 5 days) |
0.85 (0.76 – 0.95) |
1.09 (1.05 – 1.14) |
0.98 (0.87 – 1.11) |
1.05 (1.01 – 1.09) |
0.87 (0.60 – 1.28) |
1.12 (1.00 – 1.25) |
1.11 (0.99 – 1.24) |
0.99 (0.96–1.01) |
| Period by max air temp (no lag) |
0.86 (0.77 – 0.96) |
1.09 (1.04 – 1.13) |
0.99 (0.88 – 1.11) |
1.05 (1.01 – 1.09) |
0.46 (0.21 – 1.01) |
1.32 (1.07 – 1.64) |
1.27 (1.03 – 1.57) |
0.96 (0.91–1.01) |
| Period by min air temp (no lag) |
0.86 (0.77 – 0.96) |
1.09 (1.04 – 1.13) |
0.98 (0.87 – 1.11) |
1.05 (1.01 – 1.09) |
0.64 (0.34 – 1.20) |
1.41 (1.03 – 1.92) |
1.35 (0.99 – 1.85) |
0.96 (0.86–1.08) |
| Period by min air temp (lag 4 days) |
0.83 (0.73 – 0.94) |
1.09 (1.05 – 1.14) |
0.98 (0.87 – 1.11) |
1.05 (1.01 – 1.09) |
0.42 (0.20 – 0.90) |
1.71 (1.18 – 2.46) |
1.77 (1.22 – 2.58) |
1.04 (0.92–1.18) |
| Period by mean solar radiation (lag 5 days) |
0.86 (0.77 – 0.96) |
1.09 (1.04 – 1.13) |
0.98 (0.87 – 1.11) |
1.05 (1.01 – 1.08) |
0.84 (0.55 – 1.27) |
1.41 (1.01 – 1.96) |
1.38 (0.99 – 1.92) |
0.98 (0.93–1.04) |
|
NA = Not Applicable | ||||||||
Turner et al. Environmental Health 2007 6:37 doi:10.1186/1476-069X-6-37 |
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