Biostats Module 4

What does sensitivity measure in screening or diagnosis?

Ability to correctly identify people with the condition

In relative risk, what does a value of 1 indicate?

There is no change in risk

What does specificity measure in screening or diagnosis?

Ability to correctly exclude people without the condition

In odds ratio, what does a value greater than 1 suggest?

There is an increased risk Signup and view all the answers

What type of studies use relative risk as a measure?

Cohort studies Signup and view all the answers

What does an odds ratio of less than 1 suggest?

There is a decreased risk Signup and view all the answers

What does survival analysis primarily examine?

Duration of time until an event occurs Signup and view all the answers

What is the formula for calculating sensitivity in screening or diagnosis?

a/(a+c) Signup and view all the answers

Which statistical method examines the duration of time until an event occurs?

Survival analysis Signup and view all the answers

What is the formula for calculating specificity in screening or diagnosis?

d/(b+d) Signup and view all the answers

What is the x-axis of a Kaplan Meier Curve?

Time Signup and view all the answers

Which measure is used for cohort studies?

Relative risk Signup and view all the answers

What does it mean if the relative risk is less than 1?

There is a decreased risk Signup and view all the answers

What is the y-axis of a Kaplan Meier Curve?

Proportion of the sample that have not had the event Signup and view all the answers

Which measure is used to correctly screen out people without a certain condition?

Specificity Signup and view all the answers

What does a relative risk value of less than 1 indicate?

Decreased risk Signup and view all the answers

In odds ratio, what does a value greater than 1 suggest?

Increase in odds Signup and view all the answers

What is the primary purpose of survival analysis?

To examine duration until an event occurs Signup and view all the answers

What does sensitivity measure in screening or diagnosis?

Incidence of true positives Signup and view all the answers

In a Kaplan Meier Curve, what does the y-axis represent?

Proportion of the sample that have not had the event Signup and view all the answers

What type of studies use odds ratio as a measure?

Case-control studies Signup and view all the answers

Biostats Module 4

Questions and Answers

What does sensitivity measure in screening or diagnosis?

In relative risk, what does a value of 1 indicate?

What does specificity measure in screening or diagnosis?

In odds ratio, what does a value greater than 1 suggest?

What type of studies use relative risk as a measure?

What does an odds ratio of less than 1 suggest?

What does survival analysis primarily examine?

What is the formula for calculating sensitivity in screening or diagnosis?

Which statistical method examines the duration of time until an event occurs?

What is the formula for calculating specificity in screening or diagnosis?

What is the x-axis of a Kaplan Meier Curve?

Which measure is used for cohort studies?

What does it mean if the relative risk is less than 1?

What is the y-axis of a Kaplan Meier Curve?

Which measure is used to correctly screen out people without a certain condition?

What does a relative risk value of less than 1 indicate?

In odds ratio, what does a value greater than 1 suggest?

What is the primary purpose of survival analysis?

What does sensitivity measure in screening or diagnosis?

In a Kaplan Meier Curve, what does the y-axis represent?

What type of studies use odds ratio as a measure?

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