Odds ratios between ischaemic stroke subtypes (TOAST classification) and pollutant concentrations from 1-day lag, Dijon stroke register (France), from 1994 to 2004
| Pollutant | Ischaemic stroke: large arteries (n = 262)† | Ischaemic stroke: lacunar (n = 193)‡ | Ischaemic stroke: cardioembolic (n = 208)§ | Ischaemic stroke: transient ischaemic attacks (n = 172)¶ | ||||
|---|---|---|---|---|---|---|---|---|
| ORa (95% CI) | p Value | ORa (95% CI) | p Value | ORa (95% CI) | p Value | ORa (95% CI) | p Value | |
| 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. | ||||||||
| *PM10 data from 1999 to 2004: †n = 145; ‡n = 93; §n = 92; ¶n = 80. | ||||||||
| SO2 | 1.088 (0.785 to 1.508) | 0.61 | 0.831 (0.605 to 1.412) | 0.25 | 0.974 (0.707 to 1.344) | 0.87 | 0.966 (0.659 to 1.416 | 0.86 |
| NOx | 0.988 (0.863 to 1.130) | 0.20 | 0.896 (0.771 to 1.042) | 0.15 | 1.028 (0.888 to 1.190) | 0.70 | 0.860 (0.742 to 1.022) | 0.09 |
| O3 | 1.140 (1.013 to 1.288) | 0.03 | 1.077 (0.931 to 1.245) | 0.31 | 1.113 (0.970 to 1.278) | 0.12 | 1.206 (1.038 to 1.401) | 0.01 |
| CO. | 0.998 (0.994 to 1.003) | 0.64 | 0.997 (0.992 to 1.001) | 0.24 | 0.999 (0.995 to 1.004) | 0.91 | 0.999 (0.995 to 1.004) | 0.91 |
| PM10* | 0.938 (0.769 to 1.144) | 0.52 | 0.881 (0.698 to 1.111) | 0.28 | 1.101 (0.895 to 1.354) | 0.36 | 1.095 (0.833 to 1.432) | 0.50 |