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Analytic epidemiological studies
Studies concerned with testing hypotheses to determine whether specific exposures are
related to the presence or absence of specific diseases
Control
Elements built into a design to reduce or eliminate interpretations of the cause of the
results. These elements include the use of randomization, manipulation of experimental
conditions, and use of comparison groups.
Control group
The group that does not receive the experimental treatment in an experiment or
intervention.
Experimental group
The group that receives the "new" treatment in an experiment.
External validity
Refers to the extent to which the results of a study can be generalized from the study
sample to the target population.
Extraneous variable
,Any variable that is not directly related to the purpose of the study but that may affect
the dependent variable; sometimes termed intervening or confounding variables.
Internal validity
Refers to whether the independent variable made a difference.
Paradigm
Organizing framework that contains a set of assumptions or values that underlie how
scientists view reality, truth, and research.
Qualitative research
Research directed at the discovery of meaning and underlying philosophical inquiry or
psychology/sociology underpinnings
Descriptive correlational study
A study used to describe and explain the nature and magnitude of existing relationships.
Descriptive epidemiological studies
Studies concerned with the distribution and patterns of disease or disability in a
population.
Descriptive study
A study designed to describe the meaning of existing phenomena.
Double-blinded study
Treatment assignment (to either experimental or control group) is unknown to patients
and health-care providers. Sometime referred to as patient-provider masking.
Quantitative research
Research directed at the discovery of relationships and cause and effect. Methods used
are based on the scientific method of inquiry.
, Randomized clinical trial (RCT)
A prospective study evaluating the effectiveness of an intervention/ treatment in a large
sample of patients. Essential features include use of an experimental and control group,
randomization, masking of patients and health-care providers, and sufficient sample
sizes.
Research design
Set of guidelines by which a researcher obtains answers to questions.
Single-blinded study
Treatment assignment (to either experimental or control group) is unknown to patients.
The researcher must be able to control the experimental situation by eliminating
actions of other possible variables beyond the independent variable. Manipulate
independent variable, Randomly Assign & Intervention protocols is also known
as
A. Control
B. Experiment
C. Variable
D. Manipulation
A. Control
Select subjects randomly from population & then assign them to control &
experimental groups is also known as
A. Control
B. Random Assignment