Document yEwLdpb57KNwDw5B54Jqx64d

26 V. RESULTS AND INTERPRETATION The two cohorts which were constructed according to the criteria described in the preceding section have been considered in dividually and compared with each other as well as with the general population. Description and comparison of these cohorts will be pre sented here as a preface to the results of the study, A tabulated summary of each group and of the combined cohorts Is shown below: Asbestos Cohort Original Cohort 2327 Lost Persoos Deducted 54 Final Cohort 2273 Living in 1955 (working and retired) 2224 Dead by 1955 Ca. of lung Questionable Ca. of lung Other Causes Unknown Causes . 49 3 0 46 0 Smokers Nonsmokers Unknown 1931 340 2 Thetford Mines Cohort 3764 79 3685 3547 Summary of Combined Cohorts 6091 133 5958 5771 138 6 3 123 6 2742 925 18 187 9 3 169 6 4673 1265 20