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Table 4 Associations of particulate matter indices, NO 2 and O 3 with prevalence of symptoms in all participants and the subgroup of asthmatics (random effects pooled estimates)

From: Particulate matter air pollution and respiratory symptoms in individuals having either asthma or chronic obstructive pulmonary disease: a European multicentre panel study

Symptom Pollutant       Lag0       Lag1       Lag2       Lag06
   OR 95% CI OR 95% CI OR 95% CI OR 95% CI
Woken with breathing problems          
  PM10         
 Total   1.001 0.966-1.037 1.010 0.964-1.059 0.978 0.928-1.030 1.009 0.881-1.155
 Asthmatics   0.977 0.937-1.019 0.982 0.923-1.044 0.953 0.881-1.031 0.947 0.855-1.049
  PM2.5         
 Total   0.997 0.952-1.044 0.980 0.915-1.049 0.953 0.886-1.025 0.889 0.682-1.160
 Asthmatics   0.988 0.932-1.048 0.955 0.863-1.057 0.944 0.868-1.026 0.943 0.787-1.130
  PM10 - 2.5         
 Total   1.020 0.883-1.179 1.047 0.989-1.109 0.996 0.935-1.062 1.019 0.860-1.208
 Asthmatics   0.959 0.797-1.154 1.009 0.952-1.070 0.915 0.731-1.147 0.689 0.381-1.247
  PNC         
 Total   0.971 0.865-1.090 1.027 0.952-1.109 0.958 0.863-1.064 0.910 0.638-1.298
 Asthmatics   1.012 0.844-1.212 1.047 0.961-1.141 1.019 0.939-1.106 1.195 0.953-1.497
  Absorbance         
 Total   1.014 0.952-1.079 1.018 0.966-1.073 0.971 0.922-1.022 0.929 0.777-1.111
 Asthmatics   1.051 0.874-1.264 1.026 0.940-1.120 0.978 0.916-1.044 0.967 0.805-1.162
  NO2         
 Total   0.980 0.940-1.021 0.983 0.943-1.026 0.970 0.926-1.016 0.969 0.856-1.098
 Asthmatics   1.017 0.918-1.126 0.995 0.935-1.059 0.964 0.918-1.012 0.984 0.850-1.140
  O3         
 Total   1.063 1.020-1.108 1.023 0.957-1.094 1.010 0.959-1.064 1.037 0.896-1.200
Asthmatics   0.982 0.896-1.077 1.001 0.925-1.082 1.009 0.926-1.099 1.075 0.935-1.235
Shortness of breath          
  PM10         
 Total   0.998 0.970-1.026 1.037 1.002-1.074 1.014 0.986-1.042 1.050 0.998-1.106
 Asthmatics   0.992 0.956-1.028 1.030 0.994-1.067 0.997 0.962-1.032 1.049 0.936-1.176
  PM2.5         
 Total   1.001 0.942-1.063 1.035 0.974-1.099 1.026 0.984-1.070 1.027 0.944-1.117
 Asthmatics   1.006 0.951-1.063 1.032 0.977-1.091 1.018 0.965-1.074 1.005 0.828-1.219
  PM10 - 2.5         
 Total   0.995 0.949-1.042 1.060 1.015-1.107 1.002 0.949-1.057 1.044 0.947-1.151
 Asthmatics   0.972 0.915-1.031 1.028 0.973-1.086 0.978 0.925-1.033 1.010 0.872-1.168
  PNC         
 Total   0.972 0.901-1.048 0.910 0.844-0.982 0.919 0.860-0.982 0.908 0.770-1.071
 Asthmatics   0.976 0.898-1.062 0.925 0.817-1.046 0.952 0.879-1.031 1.032 0.860-1.237
  Absorbance         
 Total   1.019 0.936-1.109 1.042 0.954-1.138 1.026 0.978-1.077 1.064 0.929-1.218
 Asthmatics   1.014 0.930-1.106 1.055 0.975-1.143 1.048 0.985-1.116 1.218 0.950-1.562
  NO2         
 Total   1.011 0.934-1.094 0.996 0.915-1.085 0.985 0.940-1.032 1.011 0.874-1.170
 Asthmatics   0.991 0.886-1.108 0.987 0.880-1.106 0.984 0.915-1.058 1.013 0.846-1.213
  O3         
 Total   0.988 0.957-1.021 0.961 0.921-1.003 0.975 0.946-1.004 0.962 0.914-1.014
 Asthmatics   0.967 0.931-1.004 0.932 0.898-0.967 0.932 0.888-0.979 0.915 0.828-1.011
Wheezing          
  PM10         
 Total   1.026 0.980-1.074 1.027 1.000-1.055 1.011 0.981-1.041 0.989 0.869-1.125
 Asthmatics   1.012 0.955-1.073 1.011 0.979-1.043 0.994 0.964-1.026 0.984 0.894-1.082
  PM2.5         
 Total   0.998 0.925-1.077 1.004 0.931-1.082 0.982 0.882-1.094 0.873 0.629-1.213
 Asthmatics   0.971 0.886-1.064 0.966 0.888-1.050 0.973 0.886-1.067 0.902 0.681-1.195
  PM10 - 2.5         
 Total   1.041 0.990-1.094 1.073 1.028-1.120 1.023 0.980-1.068 1.053 0.966-1.147
 Asthmatics   1.045 0.972-1.124 1.044 0.995-1.096 1.003 0.957-1.051 1.008 0.909-1.119
  PNC         
 Total   0.934 0.791-1.104 0.947 0.816-1.099 0.985 0.841-1.154 1.092 0.639-1.865
 Asthmatics   0.975 0.815-1.165 0.989 0.821-1.191 1.046 0.842-1.301 1.406 0.730-2.705
  Absorbance         
 Total   0.980 0.910-1.055 1.000 0.930-1.075 0.999 0.888-1.123 0.926 0.644-1.332
 Asthmatics   0.970 0.890-1.058 0.984 0.906-1.070 0.975 0.853-1.113 1.008 0.755-1.347
  NO2         
 Total   0.995 0.922-1.074 0.983 0.923-1.047 1.003 0.933-1.078 1.004 0.828-1.217
 Asthmatics   0.995 0.934-1.060 0.980 0.916-1.048 0.986 0.895-1.086 0.999 0.838-1.191
  O3         
 Total   1.008 0.966-1.051 1.012 0.965-1.061 1.009 0.949-1.073 1.031 0.933-1.138
 Asthmatics   0.985 0.948-1.025 0.998 0.959-1.038 1.046 0.947-1.156 1.060 0.916-1.228
Cough          
  PM10         
 Total   1.001 0.975-1.027 1.014 0.985-1.045 0.999 0.957-1.043 1.007 0.913-1.110
 Asthmatics   0.993 0.952-1.034 0.991 0.956-1.026 0.989 0.935-1.047 0.969 0.900-1.043
  PM2.5         
 Total   0.960 0.922-0.999 0.971 0.933-1.011 0.962 0.919-1.008 0.901 0.753-1.079
 Asthmatics   0.940 0.847-1.042 0.949 0.884-1.019 0.946 0.879-1.019 0.918 0.761-1.107
  PM10 - 2.5         
 Total   1.099 0.943-1.282 1.089 0.956-1.240 1.043 0.958-1.137 1.210 0.772-1.896
 Asthmatics   1.016 0.966-1.069 1.024 0.974-1.076 1.003 0.912-1.103 1.005 0.902-1.120
  PNC         
 Total   0.981 0.916-1.051 1.009 0.944-1.079 0.968 0.895-1.047 0.894 0.714-1.119
 Asthmatics   0.979 0.906-1.058 0.972 0.900-1.050 0.918 0.807-1.044 0.824 0.618-1.098
  Absorbance         
 Total   0.939 0.898-0.982 0.976 0.932-1.022 0.959 0.917-1.003 1.083 0.797-1.472
 Asthmatics   0.937 0.833-1.054 0.976 0.892-1.068 0.942 0.891-0.997 1.078 0.782-1.486
  NO2         
 Total   0.971 0.937-1.007 0.981 0.945-1.017 0.965 0.931-1.000 0.959 0.899-1.024
 Asthmaticss   0.980 0.935-1.026 0.986 0.941-1.033 0.972 0.925-1.020 0.981 0.903-1.066
  O3         
 Total   1.061 1.013-1.111 1.049 1.016-1.083 1.059 1.027-1.091 1.066 0.982-1.157
 Asthmatics   1.062 1.016-1.110 1.051 1.002-1.102 1.058 1.022-1.095 1.106 0.939-1.302
  1. Bold are significant pooled effects.