What is count?
Simplest quantitative measure; simply counting each case.
How do you get a ratio?
By dividing one quantity by another.
Calculate the ratio, x/y.
What is the proportion?
A type of ratio. It's expressed as a percentage wherein both the numerator and denominator are combined (total).
What is point prevalence?
All cases of a disease or deaths that exists at a particular point in time relative to a specific population.
Point prevalence = # of persons ill at a point in time/ total number in the group
What is the population at risk?
The members of the population who are capable of developing the disease being studied.
What is the incidence rate formula?
What is the crude death rate formula?
What is the case fatality rate formula? This is the # of deaths due to a disease from people afflicted with it.
What is the difference between cause-specific rate and case fatality rate?
Cause-specific rate measures the mortality of people with a specific disease over the general population at the midpoint of a time period. Whereas case fatality rate measures deaths from people with a specific disease against people who also have the same disease but haven't died.
Fetal death rates measure fetal deaths after ___.
20+ weeks