The following are standardized morality ratios SMRs for lung

The following are standardized morality ratios (SMRs) for lung cancer in England:

STANDARDIZED MORTALITY RATIO

Occupation

1949-1960

1968-1979

Carpenters

Bricklayers

209

142

135

118

Based on these SMRs alone, it is possible to conclude that:

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

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

The age-adjusted rate of death from lung cancer in bricklayers was greater in 1949-1960 than it was in 1968-1979

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

The proportionate mortality rate from lung cancer in carpenters in 1968-1979 was 1.35 times greater than would have been expected for a group of men of similar ages in all occupations.