Odds ratios (ORs) of air pollutants according to quintiles of resting heart rate and current smoking status
| Heart rate (beat/mn) | p for trend | |||||
|---|---|---|---|---|---|---|
| Q1 | Q2 | Q3 | Q4 | Q5 | ||
| <60.0 | 60.0–64.4 | 64.5–67.4 | 67.5–74.9 | ⩾75.0 | ||
| n = 122/37 | n = 123/36 | n = 139/36 | n = 139/40 | n = 159/39 | ||
| For NO2 and SO2 multivariate models were adjusted for sex, months, relative humidity, physical activity, systolic blood pressure, cardiovascular drug use (drugs for hypertension or heart diseases), and C reactive protein. For O3 an additional adjustment for temperature was done. Same day 0–8 am corresponds to the average of the measurements of pollutants between 0 am and 8 am, just before the medical examination time. Three day mean D0,D-1,D-2 corresponds to the average concentration of air pollutants over three days; on the same day of the examination and two days before. N = n1/n2: number of non-smokers/number of smokers. ORs with 95% CI were given for an increase of 5 (μg/m3) of NO2, SO2, and O3. | ||||||
| NO2 (μg/m3) same day 0 am–8 am | ||||||
| non-current smokers | 1 | 1.03 | 0.98 | 1.04 | 1.09 | 0.04 |
| 0.92 to 1.15 | 0.88 to 1.10 | 0.93 to 1.16 | 0.98 to 1.22 | |||
| current smokers | 1 | 1.07 | 1.10 | 1.21 | 1.28 | 0.02 |
| 0.86 to 1.32 | 0.89 to 1.36 | 0.98 to 1.49 | 1.04 to 1.58 | |||
| SO2 (μg/m3) same day 0 am–8am | ||||||
| non-current smokers | 1 | 1.01 | 0.96 | 1.06 | 1.08 | 0.28 |
| 0.79 to 1.29 | 0.74 to 1.23 | 0.83 to 1.35 | 0.44 to 1.38 | |||
| current smokers | 1 | 1.09 | 1.45 | 1.44 | 1.63 | 0.03 |
| 0.62 to 1.89 | 0.86 to 2.44 | 0.86 to 2.41 | 0.98 to 2.71 | |||
| O3 (μg/m3) three day D0,D-1,D-2 | ||||||
| non-current smokers | 1 | 1.03 | 1.01 | 0.99 | 0.93 | 0.04 |
| 0.94 to 1.13 | 0.92 to 1.10 | 0.91 to 1.08 | 0.85 to 1.01 | |||
| current smokers | 1 | 0.92 | 0.99 | 0.87 | 0.95 | 0.39 |
| 0.77 to 1.10 | 0.83 to 1.18 | 0.73 to 1.04 | 0.80 to 1.14 | |||