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
Zone; sex and smoking status	2.5	5.0	50.0	95.0	97.5	Mean	No. of observed cases	No. of excess attributable cases
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.