Topic 3.1 Measuring disease mortality

Question 1

What are the three different types of mortality rates?

Answer 1

Crude rates
Specific rates
Standardised (adjusted) rates

Question 2

What is a mortality rate?

Answer 2

Total number of deaths reported during a given time interval from a the population from which the deaths occured

Question 3

How do you calculate crude mortality rate?

Answer 3

number of deaths/total population

Question 4

How do you calculate specific mortality rates?

Answer 4

number of deaths due to a specific causes/total mid-year population

Question 5

How do you calculated age specific mortality rate?

Answer 5

number of deaths in age group/total population in that age group

Question 6

How do you calculate the age standardised mortality rate?

Answer 6

Total expected deaths in standard population/ standardised population)

Question 7

how do you calculated standardised mortality ratio (SMR) ?

Answer 7

observed deaths/expected deaths

Question 8

What does an standardised mortality ratio (SMR) > 1 mean?

Answer 8

Deaths in the study population are expected to be greater than the standard population

Question 9

What does a standardised mortality ratio (SMR) < 1 mean?

Answer 9

Deaths in the study population are expected to be less than the standard population

Question 10

How do you calculate the case fatality ratio?

Answer 10

Deaths due to disease/number of cases due to same disease

Question 11

How do you calculate survival rate?

Answer 11

no. patients alive after specific period of time after diagnosis/number of pts diagnosed