Table 4 Odds ratios between ischaemic stroke occurrence and ozone concentration from 1‐day lag, in 2‐pollutant models, Dijon stroke register (France), from 1994 to 2004.
| Pollutant | Adjusted for PM10* | Adjusted for S02 | Adjusted for NO2 | Adjusted for CO | ||||
|---|---|---|---|---|---|---|---|---|
| ORa (95% CI) | p Value | ORa (95% CI) | p Value | ORa (95% CI) | p Value | ORa (95% CI) | p Value | |
| O3 | 1.129 (1.025 to 1.244) | 0.013 | 1.135 (1.053 to 1.222) | 0.001 | 1.125 (1.044 to 1.218) | 0.002 | 1.128 (1.045 to 1.217) | 0.002 |
| PM10* | 0.988 (0.877 to 1.112) | 0.84 | – | – | – | |||
| SO2 | – | 1.027 (0.846 to 1.239) | 0.77 | – | – | |||
| NO2 | – | – | 0.963 (0.888 to 1.044) | 0..36 | – | |||
| CO | – | – | – | 0.999 (0.996 to 1.002) | 0.630 | |||
ORa, adjusted odds ratio for minimum temperature (1‐day lag), maximum relative humidity (1‐day lag), holidays (0‐day lag), influenza epidemics (0‐day lag) and for an increase of 10 μg/m3 of pollutant.
*From 1999 to 2004: n = 357.