The Extent to Which an Experiment Has Effectively Controlled for Confounding

question 25

Multiple Choice

The extent to which an experiment has effectively controlled for confounding variables is called:

• A)operational validity
• B)internal validity
• C)external validity
• D)central validity

Understand the role of demographic, geographic, and health behavior data in epidemiological research.

Recognize the importance of research design in epidemiological studies.

Recognize the importance of identifying variables in disease causation and prevention.

Comprehend the significance of screening tests' sensitivity, specificity, and predictive values.

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Definitions:

Independent Variable

A variable in an experiment or model that is manipulated to observe its effect on a dependent variable.

Dependent Variable

The variable in an experiment or study that is affected by changes in the independent variable, representing the output or outcome.

Dummy Variables

Variables created to represent categorical data with two or more categories by assigning binary values (0 or 1), allowing them to be used in regression models.

Qualitative Variables

Variables that express qualitative attributes, and are usually described by non-numeric categories or groups.