Which two of the following methods cannot be used to prevent confounding from occurring in a study? A. Randomisation B. Restriction C. Stratification D. Matching E. Multivariable a... Which two of the following methods cannot be used to prevent confounding from occurring in a study? A. Randomisation B. Restriction C. Stratification D. Matching E. Multivariable analysis
Understand the Problem
The question is asking to identify two methods from a provided list that cannot be used to prevent confounding in a study. Confounding occurs when an outside variable influences both the dependent and independent variables, which can lead to misleading results. The methods listed refer to common statistical techniques in research design.
Answer
Stratification and multivariable analysis.
The methods that cannot be used to prevent confounding from occurring in a study are stratification and multivariable analysis.
Answer for screen readers
The methods that cannot be used to prevent confounding from occurring in a study are stratification and multivariable analysis.
More Information
While randomization, restriction, and matching can be used during the study design phase to prevent confounding, stratification and multivariable analysis are typically employed during the analysis phase to deal with potential confounding effects after data collection.
Tips
A common mistake is confusing methods used to analyze and control confounding after data collection (like stratification and multivariable analysis) with those employed to prevent confounding from the start of a study.
Sources
- Which two of the following methods cannot be used to - Course Hero - coursehero.com
- TEST YOURSELF: Multiple Choice 2 QUESTIONS - cambridge.org
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