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

PollutantAdjusted for PM10*Adjusted for S02Adjusted for NO2Adjusted for CO
ORa (95% CI)p ValueORa (95% CI)p ValueORa (95% CI)p ValueORa (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.
*From 1999 to 2004: n = 357.
O31.129 (1.025 to 1.244)0.0131.135 (1.053 to 1.222)0.0011.125 (1.044 to 1.218)0.0021.128 (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