An occupational hazard research company conducted a retrospective cohort study on the relationship between asbestos exposure...
An occupational hazard research company conducted a retrospective cohort study on the relationship between asbestos exposure and mesothelioma in plumbers. There were two study groups — plumbers exposed to asbestos and plumbers not exposed to asbestos. An equal proportion (5%) of study participants in each group was misclassified. i.e. 5% of those exposed were misclassified as non-exposed and 5% of non-exposed were misclassified as exposed. Which of the following statements are true?
- The study results will underestimate the association.
- The actual association will be stronger than shown by the results.
- The study results will overestimate the association.
- The study results will be biassed towards the null.
- None of the above
Homework Answers
Due to this misclassification, we will that the association value between asbestos exposure and mesothelioma will come down. Hence, our answer is: The study results will underestimate the association.
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