Asthma is a common chronic condition that can lead to death. In this question, we explore the changes in asthma death rates between 1980 and 2014. age group (years) Number of deaths total population     1980 2014 1980 2014   0-14 20 6 3710994 4427619   15-29 45 13 3786614 4869145   30-34 49 24 2940852 4925419   45-59 106 49 2252908 4523189   60-74 182 65 1504399 3199482   75-84 98 89 400898 1061699   85+ 43 173 98691 454141   a) Calculate the crude death rates from asthma for 1980 and 2014. Interpret the rates.  b) Calculate the age-specific death rates from asthma for 1980 and 2014 and present in a single table. For one age group and year, show the formula you have used and your working.  c) Calculate the directly age-standardised death rate from asthma for 1980 using the population given for 2014 as the standard population. State the value of the rate that you have calculated and briefly describe in words the steps you took in your calculation.

Asthma is a common chronic condition that can lead to death. In this question, we explore
the changes in asthma death rates between 1980 and 2014.

a) Calculate the crude death rates from asthma for 1980 and 2014. Interpret the
rates. 
b) Calculate the age-specific death rates from asthma for 1980 and 2014 and present in a single table. For one age group and year, show the formula you have used and your working. 

c) Calculate the directly age-standardised death rate from asthma for 1980 using the population given for 2014 as the standard population. State the value of the rate that you have calculated and briefly describe in words the steps you took in your calculation. 

d) Briefly discuss the difference between the crude and directly age-standardised death rates from asthma that you calculated for the total Australian population for 1980, and compare to the rate for 2014, cite relevant values to illustrate the points you make.