Document q5a1Qw7n5yO2ZqYNJg1ew65M

61 TABLE 22 Comparison of the Actual and expected Number of Lung Cancer Deaths by Age Among Asbestos Miners Age Crouo Province Total Specified Primary Rate oer 100,000 No. of Miners Expected* No. of Deaths Observed No, of Deaths Proved Total 20-44 45-54 55-64 65 4 Unknown 1.8 24.3 67.6 89.3 3901 1124 615 315 3 0* 2 2 2 11 13 33 45 00 * Actually . 4 '+ The expected number is based on the average of the 1954 and 1955 age-specific rates for the Province of Quebec. Table 22 also answers a question previously raised. It shows that the mambers of these cohorts have not died from lung can- . ccr at an age earlier than the general population, and that such an ex planation cannot be offered for the absence of lung cancer in 240 men with more than 40 years of employment referred to on page 37. A comparison between the asbestos miners and the popu lation o the Dominion as a whole was made, using statistical material from several sources. In one source, Phillips gave age- and sex- specific rates for Canada for three periods between 1931 and 1952. The rates for males are given in Table 23.