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8 Cards in this Set
- Front
- Back
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Valid: |
Well grounded in truth or logic
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Face validity: |
Does it measure what it says it does?
Does the measure of the variable answer the construct?
Does measuring overall survival represent the efficacy of the drug? |
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Criterion Validity: |
Does the measure give results which are in agreement with other measures of the same thing?
Does the measure of the CA19-9 marker relate to the overall survival of pancreatic cancer patients in regards to efficacy of the combination therapy? |
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Concurrent criterion validity: |
Comparison of new test with established test:
Overall survival can be used to measure efficacy Can CA19-9 measurements be used to measure efficacy too? |
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Predictive Criterion validity |
Does the test predict the outcome of some future attempt? Do your SATS scores predict your A level grades? |
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Construct Validity |
How well does the test tap into the underlying construct? Is overall survival actually measuring efficacy of the combination therapy? |
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Ecological Validity? |
Does the study reflect naturally occurring behaviour?
Are patients in the study following the treatment as they would in the real world?
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Population Validity |
Is our sample adequate for the claims we make about the population?
Sampling is key
If we measure efficacy of the combination therapy in White patients, can these results be generalised to other ethnicities? |
