Types of Studies

Question 1

experimental

Answer 1

randomized controlled trial

nonrandomized design

Question 2

observational

Answer 2

cohort
cross-sectional
case-control
case

Question 3

review

Answer 3

meta-analysis

Question 4

randomized controlled trial

Answer 4

random allocation into treatment & placebo groups

can determine efficacy of the intervention

Question 5

nonrandomized design

Answer 5

nonrandom allocation into treatment and placebo groups

can determine efficacy of the intervention

Question 6

cohort

Answer 6

data gathered from the same individuals overt time (longitudinal)
can assess risk factors or outcomes

Question 7

cross-sectional

Answer 7

data gathered at one point in time

can determine prevalence of an outcome in a population

Question 8

case-control

Answer 8

data gathered from individuals with the condition of interest (cases) & compare to without the condition (controls)

Question 9

case

Answer 9

detailed information gathered about one individual (or a small group of individuals)

Question 10

meta-analysis

Answer 10

data from multiple studies are statistically combined and analyzed