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Three kinds of frequency measures are used with two-category variables (also called dichotomous variables). Fill in the letter that describes the correct use for each frequency measure:
1. Rate 2. Ratio 3. Proportion a. Used to compare the occurrence of a disease in a subset of a group with that in the whole group b. Used to compare the occurrence of a disease in two different groups c. Used to show the values a variable can take d. Used to measure the occurrence of an event in a population over time
1. Rate 2. Ratio 3. Proportion
a. Used to compare the occurrence of a disease in a subset of a group with that in the whole group b. Used to compare the occurrence of a disease in two different groups c. Used to show the values a variable can take d. Used to measure the occurrence of an event in a population over time
a. point prevalence rate and period prevalence rate b. incidence rate and prevalence rate c. crude death rate and cause-specific death rate d. relative risk and odds ratio
5. Incidence rate 6. Attack rate 7. Secondary attack rate a. A measure of the frequency of new cases of a disease among the contacts of known cases b. A measure of the frequency with which new cases of a disease occur in a population over a period of time c. A comparison of the rates of disease in two groups that differ by demographic characteristics or exposure history d. A specific type of incidence rate, calculated for a narrowly defined population observed for a limited time, such as during an outbreak
5. Incidence rate 6. Attack rate 7. Secondary attack rate
a. A measure of the frequency of new cases of a disease among the contacts of known cases b. A measure of the frequency with which new cases of a disease occur in a population over a period of time c. A comparison of the rates of disease in two groups that differ by demographic characteristics or exposure history d. A specific type of incidence rate, calculated for a narrowly defined population observed for a limited time, such as during an outbreak
8. Period prevalence rate 9. Point prevalence rate 10. Cause-specific mortality rate a. A measure of the frequency of occurrence of death from all causes in a population during a specified time period b. A measure of the frequency of occurrence of death from a specified cause in a defined population during a specific time period c. A measure of the proportion of people in a population who have a particular disease at a specified point in time d. A measure of the proportion of people in a population who have a particular disease over a specified period of time
8. Period prevalence rate 9. Point prevalence rate 10. Cause-specific mortality rate
a. A measure of the frequency of occurrence of death from all causes in a population during a specified time period b. A measure of the frequency of occurrence of death from a specified cause in a defined population during a specific time period c. A measure of the proportion of people in a population who have a particular disease at a specified point in time d. A measure of the proportion of people in a population who have a particular disease over a specified period of time
True False
12. To compare the risk of Disease A in males vs. the risk in females, we should use which of the following:
a. Total numbers b. Mortality c. Rates d. Averages
a. Compares the prevalence of a disease over time b. Compares the rates of disease in two groups that have different characteristics c. Estimates the lifetime chance of developing a disease d. Predicts the number of deaths from a given number of disease cases
a. Odds ratio b. Prevalence c. Relative risk d. All of the above
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