Attached is the table required to answer the questions. Thanks!

A retrospective cohort study is conducted of mortality from all causes of death among persons occupationally exposed to asbestos from 1970 to 2000. The standard population is the population of New York State, exclusive of New York City, for the same time period. To control for age and time period, indirect standardization is used. The person- years, observed deaths, and population rates are shown below for each stratum. 1) Calculate the expected number of deaths for each stratum Person Years Expected Deaths Time Period Time Period Age 1970-1979 1980-1989 1990-1999 20-29 500 1980-1989 1000 1990-1999 200 Age 1970-1979 30-39 1000 1500 1000 20-29 40-49 1000 1700 1500 30-39 50-59 500 1000 1500 40-49 60+ 500 600 700 50-59 60+ Observed Deaths 2) Summing across time period, calculate the SMR for each age stratum and for the entire Time Period study cohort. Age 1970-1979 1980-1989 1990-1999 20-29 3) Explain in a sentence the meaning of the SMR for the entire study cohort. 30-39 40-49 50-59 UI NW WON AUTOIA - COUINC 4) What are some of the advantages and disadvantages of using the general population of 60+ NYS, exclusive of NYC, as the comparison group for this study instead of another occupational group? Standard Population Rates (per 1000 population/year) Time Period Age 1970-1979 1980-1989 1990-1999 20-29 1.8 1.8 1.6 30-39 2.2 2.2 1.9 40-49 3.1 2.8 2.7 50-59 4.3 4.0 3.9 60+ 6.5 6.1 5.8