Homework 4

Question 1

What is generally the most expensive type of study?

Answer 1

Prospective cohort study

Question 2

Which study involves a population at one point in time?

Answer 2

Cross-sectional study

Question 3

Which study is generally the least expensive?

Answer 3

Cross-sectinoal study, case-control study

Question 4

In which study is the time required to conduct the study generally less than the duration of follow-up observed?

Answer 4

Retrospective case-control, retrospective cohort

Question 5

In which studies is the presence of disease able to change the characteristics under study?

Answer 5

Retrospective case-control, prospective case-control, cross-sectional study

Question 6

In which study are interview data subject to recall bias (ill people remember past events better or differently than well people)

Answer 6

Retrospective case-control

Question 7

Which study is least likely to be a medical student’s summer elective research project?

Answer 7

Prospective cohort

Question 8

Which study is most apt to include all types of cases of the disease under study?

Answer 8

Retrospective and prospective case-control

Question 9

Which study permits many diseases in relation to a single causal factor?

Answer 9

Cross sectional, retrospective and prospective cohort studies

Question 10

Which study has the highest level of observational evidence in support of cause-and effect relationship?

Answer 10

Prospective cohort study