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HPHY 212 > Levels of Evidence > Flashcards

Flashcards in Levels of Evidence Deck (8)
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1

Meta-Analysis

Data combined from multiple studies with statistical analysis

2

Systematic Review

Comprehensive review, but no stats

3

Randomized Controlled Trial

(Level 1)
Groups randomly assigned to either a treatment or control group. Ideally, groups should be similar at the start of the experiment.
ex) Future surgical patients of yours who are willing to take aspirin or a sugar pill

4

Prospective Cohort Study

(Level 2)
Two groups, followed over some future time. Group assignment is not random.
ex) Measuring cholesterol levels every week in students ho drink coffee vs students who do not

5

Retrospective Cohort Study

(Level 3)
Two groups, looking back in time
Ex) Reviewing hphy 212 data for the past 3 years and comparing grades for males and females

6

Case-Control Study

(Level 3)
Two similar groups with different outcomes are compared
Ex) A study comparing people with diabetes compared to people without diabetes to examine genetic risk factors

7

Case Series

(Level 4)
Similar to a case report, but with multiple patients (or observations)
Ex) your next week's surgical patients all taking aspirin

8

Expert Opinion

(Level 5)
Asking experts what they think