Which of the following statements are true regarding prospective studies?Group of answer choicesCan be used to estimate a relative riskCan be used to estimate an odds ratioConsiders random samples from each of the two outcome categories which are followed back (retrospectively) to determine the presence or absence of the risk factor for each individualConsiders subjects initially identified as disease-free and classified by presence or absence of a risk factorOften takes a long time to complete
Question
Which of the following statements are true regarding prospective studies?Group of answer choicesCan be used to estimate a relative riskCan be used to estimate an odds ratioConsiders random samples from each of the two outcome categories which are followed back (retrospectively) to determine the presence or absence of the risk factor for each individualConsiders subjects initially identified as disease-free and classified by presence or absence of a risk factorOften takes a long time to complete
Solution
The following statements are true regarding prospective studies:
-
Can be used to estimate a relative risk: True. Prospective studies are often used to estimate the relative risk of developing a certain disease or condition based on a specific risk factor.
-
Can be used to estimate an odds ratio: True. Prospective studies can also be used to estimate an odds ratio, which is a measure of association between an exposure and an outcome.
-
Considers random samples from each of the two outcome categories which are followed back (retrospectively) to determine the presence or absence of the risk factor for each individual: False. This statement describes a retrospective study, not a prospective study. In a prospective study, individuals are followed over time and data about them is collected as their characteristics or circumstances change.
-
Considers subjects initially identified as disease-free and classified by presence or absence of a risk factor: True. This is a key characteristic of prospective studies. Individuals are initially disease-free and are followed over time to see if they develop the disease or condition.
-
Often takes a long time to complete: True. Because prospective studies involve following individuals over time, they can often take many years to complete.
Similar Questions
We identify 50 patients with cancer, review their medical records, and determine that 10 of them were exposed to a risk factor.We then identify a comparison group of 50 cancer-free individuals, review their medical records, and determine that 2 were exposed to the risk factor. Which of the following statements are correct?Group of answer choicesThis is a retrospective studyThe risk factor causes cancer.Patients with the risk factor are 6 times more likely to develop cancer than patients without the risk factor (where likely is interpreted as a probability)This is a prospective studyThe odds of developing cancer for patients with the risk factor are 6 times the odds of developing cancer for those without the risk factor
Cohort studies allow true determination of incidence of an outcome.Question 2Select one:TrueFalse
The fact that certain types of people agree to participate in clinical trial may affect which of the following?Group of answer choicesplacebo effectvalidityrandomizationethics
When selecting amongst possible risk treatment options an organisation should consider a number of factors in their decision. Which of the following statements is TRUE?
Once the study population has been defined, the denominator of a risk is affected by which of the following? (You must choose all that apply to receive credit for this question; no partial credit will be awarded.)1 pointloss to follow-upmigration who is at risk of developing the health outcomedeathsbirths
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.