Table 3

 Odds ratios between stroke occurrence and concentration of air pollutants, Dijon stroke register (France), from 1994 to 2004

PollutantsIschaemic stroke (women and men), n = 1487Haemorrhagic stroke (women and men), n = 220Ischaemic stroke (men), n = 689Ischaemic stroke (women), n = 798
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), holiday (0-day lag) and influenza epidemics (0-day lag) and for an increase of 10 units (μg/m3) of pollutant.
§PM10 data from 1999 to 2004: ischaemic stroke (women and men) n = 762, haemorrhagic stroke (women and men) n = 99, ischaemic stroke (men) n = 357, ischaemic stroke (women) n = 412.
SO2
    D0.0.978 (0.868 to 1.103)0.721.099 (0.815 to 1.483)0.530.900 (0.748 to 1.081)0.261.044 (0.892 to 1.222)0.58
    D-1.0.978 (0.863 to 1.108)0.731.014 (0.747 to 1.376)0.920.981 (0.813 to 1.183)0.840.975 (0.824 to 1.153)0.77
    D-21.015 (0.902 to 1.143)0.790.961 (0.712 to 1.297)0.791.109 (0.935 to 1.315)0.230.939 (0.797 to 1.106)0.45
    D-31.003 (0.892 to 1.127)0.950.954 (0.729 to 1.248)0.731.033 (0.862 to 1.237)0.720.981 (0.841 to 1.144)0.80
NOx
    D0.1.008 (0.956 to 1.062)0.76.0.974 (0.845 to 1.122)0.711.002 ()0.925 to 1.0840.951.013 (0.943 to 1.087)0.71
    D-10.966 (0.915 to 1.019)0.211.015 (0.887 to 1.162)0.820.939 (0.866 to 1.018)0.120.987 (0.919 to 1.061)0.73
    D-20.996 (0.945 to 1.050)0.900.975 (0.851 to 1.117)0.721.013 (0.938 to 1.094)0.730.982 (0.913 to 1.055)0.62
    D-31.027 (0.975 to 1.082)0.300.936 (0.816 to 1.074)0.341.016 (0.941 to 1.097)0.671.037 (0.966 to 1.114)0.30
O3
    D0.1.046 (0.998 to 1.098)0.0591.012. (0.902 to 1.158)0.731.058 (0.987 to 1.134)0.101.036 (0.969 to 1.106)0.29
    D-11.075 (1.022 to 1.131)0.0050.974 (0.978 to 1.122)0.751.133 (1.052 to 1.220)0.0011.027 (0.958 to 1.101)0.44
    D-21.012 (0.965 to 1.062)0.600.958 (0.842 to 1.090)0.511.020 (0.951 to 1.092)0.571.006 (0.941 to 1.075)0.85
    D-30.987 (0.943 to 1.043)0.600.970 (0.856 to 1.098)0.631.000 (0.935 to 1.068)1.000.976 (0.915 to 1.040)0.46
CO
    D00.999 (0.997 to 1.001)0.431.000 (0.996 to 1.004)0.700.998 (0.995 to 1.000)0.151.000 (0.998 to 1.002)0.84
    D-10.998 (0.997 to 1.000)0.171.001 (0.997 to 1.005)0.540.998 (0.995 to 1.000)0.190.999 (0.997 to 1.001)0.70
    D-20.999 (0.998 to 1.001)0.820.999 (0.995 to 1.004)0.881.000 (0.997 to 1.002)0.960.999 (0.997 to 1.001)0.70
    D-31.000 (0.998 to 1.001)0.930.998 (0.994 to 1.002)0.461.000 (0.998 to 1.003)0.620.999 (0.997 to 1.002)0.72
PM10§
    D0.1.009 (0.930 to 1.094)0.820.901 (0.730 to 1.111)0.330.973 (0.862 to 1.098)0.661.040 (0.933 to 1.160)0.47
    D-11.011 (0.998 to 1.094)0.771.014 (0.828 to 1.241)0.850.969 (0.860 to 1.091)0.601.047 (0.942 to 1.163)0.39
    D-20.960 (0.889 to 1.036)0.301.100 (0.903 to 1.339)0.340.981 (0.877 to 1.098)0.740.941 (0.847 to 1.045)0.26
    D-30.990 (0.919 to 1.066)0.790.991 (0.881 to 1.212)0.930.985 (0.881 to 1.102)0.800.993 (0.899 to 1.096)0.89