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Table 4 Analysis of the associations between MN frequency and air pollutant levels. For each compound, 21-day peak value and 15- to 21-day mean value are reported

From: Results from the European Union MAPEC_LIFE cohort study on air pollution and chromosomal damage in children: are public health policies sufficiently protective?

Air pollutant Air pollutant measures IRR 95% CIs P value
PM10 21-day peak value 1.003 1.000 1.005 0.042
15- to 21-day mean value 1.002 0.997 1.008 0.409
PM2.5 21-day peak value 1.005 1.000 1.009 0.049
15- to 21-day mean value 1.010 1.001 1.019 0.027
Benzene 21-day peak value 1.000 0.995 1.006 0.862
15- to 21-day mean value 1.189 1.022 1.384 0.025
NO2 21-day peak value 0.999 0.996 1.002 0.490
15- to 21-day mean value 0.998 0.990 1.006 0.593
SO2 21-day peak value 1.002 1.000 1.004 0.011
15- to 21-day mean value 1.041 0.998 1.084 0.060
Oa3 21-day peak value 1.014 1.007 1.022 < 0.001
15- to 21-day mean value 0.999 0.987 1.010 0.798
  1. The Incidence Rate Ratio (IRR), 95% Confidence Intervals (95% CIs) and p value are shown
  2. aFor O3, taking into account its specific seasonal trend, the Poisson model was performed including a cubic spline for the day of the year (seasonality) rather than temperature. All the associations were assessed including town of residence, temperature, child BMI and adherence to Mediterranean diet, exposure to second-hand smoke at home, having graduated mother and father in the model as potential confounders