Question

1. Among individuals who eat a healthy diet and exercise frequently the point prevalence of hypertension is 0.09. Individuals subject to poverty, making it more difficult for them to eat a healthy diet and exercise frequently, have a 0.31 point prevalence for hypertension. What is the risk difference between the two groups?

0.29

0.76

0.78

0.22

Answer 1

risk difference

=  cumulative incidence among the exposed subjects - cumulative incidence among unexposed subjects.

here, cumulative incidence among unexposed subjects = 0.09

cumulative incidence among the exposed subjects = 0.31

the risk difference between the two groups be:-

= (0.31 - 0.09)

= 0.22

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