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Tables
- Table 1: Mean radon concentrations in Alberta and by Alberta Health Services zone as measured in the 2009-2011 Cross-Canada Survey of Radon Concentrations in Homes13
Region Geometric mean concentration, Bq/m3 Geometric standard deviation Alberta 71.0 2.14 South Zone 72.4 2.10 Calgary Zone 64.9 2.21 Central Zone 78.5 2.12 Edmonton Zone 70.2 1.86 North Zone 69.0 2.19 - Table 2: Range of population attributable risks and total number of lung cancer cases attributable to radon exposure in Alberta in 2012
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.
- Table 3: Range of population attributable risks and total number of lung cancer cases attributable to radon exposure by Alberta Health Services zone, 2012
Zone; sex and 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 South Zone Men and women combined 9.5 10.3 15.5 25.4 27.9 16.3 187 30 Ever 9.4 10.2 14.9 23.1 25.0 15.2 168 26 Never 14.0 15.0 23.3 40.0 45.2 24.8 19 5 Calgary Zone Men and women combined 9.0 9.8 15.3 25.4 28.2 16.2 559 91 Ever 9.0 9.6 14.3 23.7 26.6 15.2 503 76 Never 13.4 14.5 22.2 38.3 41.8 23.8 56 13 Central Zone Men and women combined 10.0 10.6 16.1 25.4 28.2 16.7 278 46 Ever 9.5 10.3 15.3 23.5 26.2 15.9 250 40 Never 14.6 15.8 23.5 39.4 43.3 25.0 28 7 Edmonton Zone Men and women combined 9.4 10.1 15.7 25.8 28.6 16.5 680 112 Ever 8.4 9.4 14.2 23.1 25.5 15.1 612 92 Never 13.5 14.5 22.5 40.7 45.8 24.3 68 16 North Zone Men and women combined 8.9 9.8 15.4 24.9 27.6 16.2 248 40 Ever 9.1 9.8 15.0 23.8 25.7 15.7 223 35 Never 13.5 14.6 23.3 40.0 42.5 24.4 25 6 Note: CI = confidence interval.
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