The following are standardized mortality ratios (SMRs) for lung cancer in England: Based on these…

The following are standardized mortality ratios (SMRs) for lung cancer in England: Based on these SMRs alone, it is possible to conclude that a. The number of deaths from lung cancer in carpenters in 1949-1960 was greater than the number of deaths from lung cancer in bricklayers during the same period b. The proportionate mortality from lung cancer in bricklayers in 1949-1960 was greater than the proportionate mortality from lung cancer in the same occupational group in 1968-1979 c. The age-adjusted rate of death from lung cancer in bricklayers was greater in 1949- 1960 than it was in 1968 1979 d. The rate of death from lung cancer in carpenters in 1968- 1979 was greater than would have been expected for a group of men of similar ages in all occupations e. The proportionate mortality rate from lung cancer in carpenters in 1968-1979 was 136 times greater than would have been expected for a group of men of similar ages in all occupations