| Sex | Smoking status* | Population attributable risk % quantile | No. of observed cases† | No. of excess attributable cases‡ | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2.5 | 5.0 | 50.0 | 95.0 | 97.5 | Mean | ||||
| Both | Combined | 9.4 | 10.2 | 15.6 | 26.1 | 29.8 | 16.6 | 1952 | 324 |
| Both | Ever | 9.2 | 9.9 | 14.9 | 23.4 | 25.8 | 15.6 | 1757 | 274 |
| Both | Never | 13.3 | 14.6 | 23.6 | 39.0 | 43.4 | 24.8 | 195 | 48 |
| Men | Combined | 10.1 | 10.9 | 16.2 | 26.2 | 29.0 | 17.0 | 953 | 162 |
| Men | Ever | 9.6 | 10.3 | 15.4 | 23.8 | 26.4 | 16.0 | 856 | 137 |
| Men | Never | 15.5 | 16.8 | 25.0 | 40.2 | 40.2 | 26.2 | 95 | 25 |
| Women | Combined | 8.8 | 9.5 | 14.8 | 25.4 | 28.4 | 15.8 | 999 | 158 |
| Women | Ever | 9.0 | 9.8 | 14.6 | 22.6 | 25.4 | 15.3 | 900 | 138 |
| Women | Never | 13.9 | 15.0 | 23.3 | 38.5 | 43.5 | 24.6 | 100 | 25 |
Note: CI = confidence interval.
*Combined data on the proportion of ever and never smokers in Alberta obtained from the 2000-2001, 2003, 2005 and 2007-2008 cycles of the Canadian Community Health Survey.
†Cancer incidence data obtained from the Alberta Cancer Registry. Values for "combined" smoking status represent observed number of incident cases. The observed number for ever and never smokers was estimated by assuming that 90% of lung cancer cases occur in ever smokers. Values of this variable for ever and never smokers thus represent estimates applying these proportions and are not true incidence counts.
‡Number of lung cancer cases attributable to radon exposure. Calculated as number of observed cases multiplied by mean population attributable risk percent.