different study design

Question 1

case series

Answer 1

• discusses multiple patients
• its descriptive
• no comparison group

Question 2

case report

Answer 2

detailed description of a patient/presentation that is unusual for some reason

Question 3

cross-sectional study

Answer 3

• single point in time
• participants recruited because they are assumed to be presentative of the target population

Question 4

ecological study

Answer 4

• compares the levels of exposure and/or disease across populations/groups not individual

Question 5

cohort study

Answer 5

• follows a group of people over time who have be exposed to a possible risk factor and a group who have not been exposed
• the incidence of the outcome is the exposed group is compared to the incidence of the outcome in the group who were not exposed
• can be prospective or retrospective

Question 6

case control study

Answer 6

• compare a group of people who have the outcome of interest with a group who do not
• then compare their exposure history
• retrospective

Question 7

what study starts with the exposure and look for outcome of interest

Answer 7

cohort studies

Question 8

what study always starts with the outcome and then look for the exposures

Answer 8

case-control

Question 9

randomised control trials

Answer 9

• examines cause and effect relationship between predictor and outcome variables