Question

5)

Match the following examples to their corresponding type of measure.

-       A.       B.       C.       D.    Number of occurrences of disease       -       A.       B.       C.       D.    Fraction represented by one quantity to another       -       A.       B.       C.       D.    Ratio where time is included in the denominator       -       A.       B.       C.       D.    Number of new cases per population at risk       -       A.       B.       C.       D.    Number of new cases per person-time       -       A.       B.       C.       D.    Number of people with cancer       -       A.       B.       C.       D.    The number of people who ate tuna salad divided by the number of people who did not eat tuna salad       -       A.       B.       C.       D.    The number of sick people who ate tuna salad divided by the number of people who ate tuna salad       -       A.       B.       C.       D.    The number of people diagnosed with flu on a cruise ship divided by the number of person-weeks on the cruise ship

A. Ratio B. Proportion C. Count D. Rate

6)

Match the following examples to their corresponding type of measure

-       A.       B.       C.       D.       E.       F.    Number of persons ill per total number in the group at a time point       -       A.       B.       C.       D.       E.       F.    Number of persons ill per average population during a time period       -       A.       B.       C.       D.       E.       F.    Existing cases of disease per population during a given year       -       A.       B.       C.       D.       E.       F.    In an at-risk group, the number of people who experience the onset of disease during a specific time interval       -       A.       B.       C.       D.       E.       F.    Number of ill per the ill and well people over a short time period       -       A.       B.       C.       D.       E.       F.    Number of new cases of disease over a time period per the total population at risk during the same time period       -       A.       B.       C.       D.       E.       F.    Number of new cases during the time period per the total person-time of observation

A. Incidence density B. Point prevalence C. attack rate D. Cumulative prevalence E. Incidence rate F. Period prevalence

10)

There were 48 deaths per 100,000 among 18-24 year olds is an example of a:

		age-specific rate
		cause-specific rate
		proportional mortality ratio
		standardized mortality ratio

Answer 1

Answer 5:

The four kinds of measure used are ratio, proportion, rate and count.

The simplest one is "count" which tells a absolute number. Ratio is used to express relative number or magnitude of each kind. Proportion us used to express a part in relation to the whole. Rate refers to measurements done per unit time.

We can sort the items as follows :

Example	Type of measure
Number of occurrences of disease.	Count.
Fraction represented by one quantity to another.	Ratio.
Ratio where time is included in the denominator.	Rate.
Number of new cases per population at risk.	Proportion.
Number of new cases per person-time.	Rate.
Number of people with cancer.	Count.
The number of people who ate tuna salad divided by the number of people who did not eat tuna salad.	Ratio.
The number of sick people who ate tuna salad divided by the number of people who ate tuna salad.	Ratio.
The number of people diagnosed with flu on a cruise ship divided by the number of person-weeks on the cruise ship.	Rate.

Answer 10:

When we express deaths for a particular group in a population, it is called the standardized mortality ratio. Hence, correct choice should be:

(d) standardized mortality ratio.