Question

I need help with my epidemiology class!!

Question 15 2 pts Suppose we have found that there is a statistically significant association between radon exposure and increased incidence of lung cancer. Choose two of the criteria needed to argue a causal relationship that were discussed in lecture and describe how these criteria could be used to determine that exposure to radon causes lung cancer Remember, the criteria discussed in class were Strength Consistency Specificity Temporality Biological Gradient Plausibility Coherence Analogy NOTE: This is a short answer question, so write your answer in Canvas HTML Editor Paragraph

Answer 1

1. Strength of association:

The stronger association between rusk factors and outcome the more likely the relationship to be casual.

2. Consistency:

Same finding must be observed different population, different study design and different time.

3. Specificity:

There must be one to one relationship among cause and outcome.

4. Temporality:

Exposure must be precede outcome.

5. Plausibility:

Presence of potential biological mechanism.