Answer:
A
Explanation:
there isnt really a explination. i did some research and this is what i came upon:) i really hope this helps. sorry for not givivng a very good explanation on this question.
Answer:
The correct option is E: There is either no association or a negative association between the factor and the disease
Explanation:
Relative risk is a ratio that compares the risk of a health event between two groups. When the relative risk is 1, this means that the risk among the two groups are identical. When the relative risk is more than one, this means there is an increased risk for the exposed group. A risk ratio of less than 1, means that there is decreased exposure, which means negative association, which implies that exposure protect against the disease. Hence from the question, a value of relative risk less than or equal to one signifies no association or negative association.
Answer:
Ergonomic
Esther has been lifting tools all day, so most likely the repetitive movements or improper lifting caused her pain.