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Flashcards in Basic Science - Stats and Research Deck (12):
1

Level 1 Evidence

Randomized controlled trial (RCT): a study in which patients are randomly assigned to the treatment or control group and are followed prospectively

2

Level 2 Evidence

Prospective cohort study a study in which patient groups are separated non-randomly by exposure or treatment, with exposure occurring after the initiation of the study

3

Level 3 Evidence

Retrospective cohort study: a study in which patient groups are separated non-randomly by exposure or treatment, with exposure occurring before the initiation of the study Case-control study: a study in which patient groups are separated by the current presence or absence of disease and examined for the prior exposure of interest

4

Level 4 Evidence

Case series a report of multiple patients with the same treatment, but no control group or comparison group

5

Level 5 Evidence

Case report (a report of a single case) Expert opinion Personal observation

6

In which of the following types of studies can an incidence rate be determined?

Prospective cohort

7

A study of patients undergoing total hip arthroplasty has been completed that compares the length of time it takes the patients to walk without aids to their age. What statistical technique should be used to analyze the data?

Linear regression

8

cohort study definition

 groups are separated non-randomly by exposure or treatment

can be level II (prospective) or level III (retrospective)

follows a particular group in relation to an event, studying them at intervals in time
and uses objective outcome criteria.

9

case control study definition

all the subjects are selected based on whether they
have (cases) or do not have (controls) the disease or outcome of interest.

Case control studies are retrospective as they always look back to see how a certain risk factor may be
different between the two groups.

10

Type of study to report outcome with RR

cohort

 

Cohort studies follow a group of individuals over time and are optimal for studying the incidence, course, and risk
factors of a disease.

11

Type of study to report outcome with odds radio?

case-control

12

best wound vac setting

125 mm Hg