Table 1.
Estimated population attributable risk percent (PAR %) of lung cancer deaths due to radon, shown in quantiles and arithmetic mean, summarizing the uncertainty distribution, by smoking status; approximate mean number of lung cancer deaths attributable to radon in 2007; and the mean number and percentage of radon-attributable lung cancer deaths that could be prevented if all homes above stated radon concentrations were remediated to background levels
| Geographical region | Smoking status | Population attributable risk percent (PAR %) | Lung cancer deaths attributable to radon (95 % CI) | Number (percentage) of radon-attributable lung cancer deaths that can be prevented | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Quantiles | 50 (Bq/m3) | 100 (Bq/m3) | 150 (Bq/m3) | 200 (Bq/m3) | ||||||||
| 2.5 % | 5 % | 50 % | 95 % | 97.5 % | Mean | |||||||
| Ontario | Combined | 11.0 | 11.4 | 13.5 | 16.2 | 16.7 | 13.6 | 847 (686, 1,039) | 389 (46 %) | 233 (28 %) | 149 (18 %) | 91 (11 %) |
| Never | 18.1 | 18.6 | 21.8 | 25.8 | 26.5 | 21.9 | ||||||
| Ever | 9.9 | 10.2 | 12.2 | 14.6 | 15.1 | 12.3 | ||||||
| HU1ǂ | Combined | 21.7 | 22.2 | 25.2 | 29.0 | 29.6 | 25.3 | 21 (18.2, 24.9) | 12 (57 %) | 9 (42 %) | 7 (31 %) | 5 (23 %) |
| Never | 36.0 | 36.7 | 40.8 | 45.7 | 46.6 | 40.9 | ||||||
| Ever | 19.5 | 20.0 | 22.7 | 26.2 | 26.9 | 22.9 | ||||||
| HU2ǂ | Combined | 6.9 | 7.2 | 9.0 | 11.2 | 11.6 | 9.1 | 24 (18.8, 31.3) | 5 (21 %) | 1 (4 %) | 0 (0 %) | 0 (0 %) |
| Never | 12.4 | 12.8 | 15.7 | 19.3 | 19.9 | 15.8 | ||||||
| Ever | 6.3 | 6.6 | 8.2 | 10.2 | 10.6 | 8.2 | ||||||
Data are shown for Ontario and two selected health units with the highest (HU1) and lowest (HU2) PAR % values among all 36 health units. The number of deaths are rounded to the nearest whole number
Background levels were assigned a random value from 10–30 Bq/m3. ǂ We will make health unit identifiers available upon request