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Research 1
Principles of Validity
Question | Answer |
---|---|
The extent to which an instrument measures what it is intended to measure is? | Validity |
This form of validity indicates that an instrument appears to test what it is supposed to. | Face Validity |
This form of validity is the least vigorous, typically observable, and scientifically weak. | Face Validity |
This form of validity indicates that the items that make up an instrument adequately sample the universe of content that define the variable being measured. | Content Validity |
This validity is most useful with questionnaires and inventories. | Content Validity |
This form of validity is based on the ability of one test to predict results obtained on an external criterion. | Criterion-related Validity |
This form of validity is the most practical and objective approach to validity testing. | Criterion-related Validity |
_________ validity compares results to "gold standard" | Criterion-related Validity |
This form of validity reflects the ability of an instrument to measure an abstract concept. | Construct Validity |
The ability to obtain a positive test when condition is really present is know as? | Sensitivity |
A true positive = | Sensitivity |
The ability to obtain a negative test when the condition is really absent is known as? | Specificity |
A true negative = | Specificity |
What is the formula for prevalence? | [(A+B)/(A+B+C+D)] X 100 |
What is the formula for sensitivity? | [(A/(A+C))] X 100 |
What is the formula for specificity? | [(D/(B+D))] X 100 |
What is the formula for positive predictive value? | [(A/(A+B))] X 100 |
What is the formula for negative predictive value? | [(D/(C+D))] X 100 |
Sensitivity or specificity is more important when risk associated is high? | Sensitivity |
Sensitivity or specificity is more important when costs or risks for further intervention are substantial? | Specificity |