Sensitivity analysis comparing the adjusted (education, smoking status) hazard rate ratio* for the subcohorts recruited between 1985–1987 and those recruited in 1990, restricted to a similar follow-up duration of 18 years
| Recruitment 1985–1987 | ||||||||
|---|---|---|---|---|---|---|---|---|
| All-cause (n†=207) | Cardiopulmonary (n†=80) | Lung cancer (n†=20) | Respiratory (n†=9) | |||||
| RR | (95% CI) | RR | (95% CI) | RR | (95% CI) | RR | (95% CI) | |
| Distance from home to a major road | ||||||||
| >50 m | 1.00 | (0.53 to 1.56) | 1.00 | 1.00 | (0.62 to 15.62) | |||
| ≤50 m | 0.91 | 1.20 | (0.54 to 2.68) | –‡ | –‡ | 3.12 | ||
| 1-year average | ||||||||
| NO2 | 1.22 | (1.04 to 1.43) | 1.58 | (1.19 to 2.09) | 1.25 | (0.72 to 2.17) | 1.15 | (0.50 to 2.68) |
| PM10§ | 1.48 | (1.08 to 2.04) | 2.49 | (1.39 to 4.44) | 1.97 | (0.59 to 6.57) | 1.34 | (0.24 to 7.56) |
| Recruitment 1990 | ||||||||
| All-cause (n†=322) | Cardiopulmonary (n†=113) | Lung cancer (n†=16) | Respiratory (n†=21) | |||||
| RR | (95% CI) | RR | (95% CI) | RR | (95% CI) | RR | (95% CI) | |
| Distance from home to a major road | ||||||||
| >50 m | 1.00 | (1.21 to 2.31) | 1.00 | (1.11 to 2.93) | 1.00 | (0.73 to 11.61) | 1.00 | (0.26 to 5.64) |
| ≤50 m | 1.67 | 1.81 | 2.91 | 1.21 | ||||
| 1-year average | ||||||||
| NO2 | 1.22 | (0.98 to 1.61) | 1.50 | (0.95 to 2.37) | 0.39 | (0.15 to 1.04) | 1.37 | (0.45 to 4.24) |
| PM10§ | 0.99 | (0.77 to 1.27) | 0.85 | (0.56 to 1.30) | 0.64 | (0.22 to 1.84) | 0.95 | (0.36 to 2.54) |
*Calculated for an IQR increase: IQRs were calculated from 1-year averages and rounded to 7 μg/m3 for PM10 and 16 μg/m3 for NO2.
†Number of fatalities.
‡Not estimable.
§Calculated as PM10=0.71×TSP.
RR, relative risk.