Epidemiology

Question 1

Crude mortality rate

Answer 1

Ratio between number of deaths due to all-cause in a population and total population size

Question 2

Cause-specific mortality rate

Answer 2

Ratio between number of deaths due a specific cause (e.g. alcohol) in a population and total population size

Question 3

Case-fatality rate

Answer 3

Ratio between number of deaths due to a specific disease and number of persons affected by the disease in a population

Question 4

Proportionate mortality rate

Answer 4

Measure of the contribution of a disease to the societal mortality burden

Question 5

Years of Potential Life Lost (YPLL)

Answer 5

Measure of the impact of premature mortality on a population

Sum of the differences between some predetermined end point and the ages of death for those who died before that end point (commonly aged 65 and average life expectancy)

Question 6

Disability adjusted life years (DALY)

Answer 6

DALY = YLL (years of life lost) + YLD (years lost due to disability)

YLL = N x LE (number of deaths x standard life expectancy)

YLD = I x DW x LD (number of incident cases x weight given to the disbality x average duration of the case until remission or death)