Unadjusted and adjusteda geometric means of the HRV indices and percent differences in HRV indices by traffic-related PM10 (TPM10) and by IL6-174G/C genotypes (N = 1549).

HRV indicates heart rate variability: SDNN indicates standard deviation of all NN intervals (units ms); TP, total power (ms2); HF, high frequency power (ms2); LF, low frequency power (ms2).aadjusted for gender, age, age squared, BMI, BMI squared, smoking status, environmental tobacco smoke exposure, alcohol consumption, physical activity, high-sensitivity C-reactive protein, uric acid levels, hypertension, heart disease, diabetes, street and railway noise, seasonal effects and area.bp-values of genotype-specific main effects of the IL6-174G/C polymorphism and TPM10 on HRV (codominant genetic model).cp-values of main effects of the IL6 -174G/C polymorphism on HRV indices were tested for additive, dominant and recessive genetic models; p-values of the most significant mode of inheritance are presented (1additive or 2dominant).dper 1 µg/m3 TPM10 increase.ecompared to reference genotype G/G.